Busting Fortress Palembang - PTBS (J) vs Grollub (A)

[PT boat skipper]

23 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy offensive in progress in NE India. Units are now heading toward Dacca.
ALERT2! enemy US 27th Division identified two hexes NE Dacca. Southern Army reserve force has been activated (17th ARMY - see below).
Withdrawal of all enemy aircraft in NE India (likely return in 48H).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon.
16th ARMY: in forward defensive positions with secure LOC to Chittagong. Mobile units (three tank regiments) have withdrawn to Dacca.
25th ARMY: all units are marching toward Palembang, where they will embark transports for Chittagong.
17th ARMY: RESERVE FORCE ACTIVATED: 10th Division will immediately embark transports (18knots) at Singapore and deploy via Chittagong to Comilla for defensive operations. 52nd and 53rd Divisions are at Nagoya.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division). First bombardment of Katka will begin in 24H.

3rd & 5th Air Division: conducting air interdiction operation targeting enemy units in open terrain east of Dacca. No enemy fighters or AAA-units. However, bad weather prevented some flights and decreased effectiveness. 7th Australian Division was located in the same hex as the enemy tank units:

Japanese aircraft (only 33% of Ki-21 were able to operate)
Ki-21-IIa Sally x 28
Ki-30 Ann x 25
Ki-43-Ic Oscar x 59
Ki-48-Ib Lily x 54
Ki-48-IIa Lily x 19

Enemy ground losses:
86 casualties reported
Squads: 0 destroyed, 1 disabled
Non Combat: 0 destroyed, 19 disabled
Engineers: 0 destroyed, 0 disabled
Guns lost 5 (1 destroyed, 4 disabled)

Furthermore, Howrah airfield (B-17 airbase) was effectively bombed and damaged but no enemy aircraft were present!

21st Air Flotilla: defensive air operation over Chittagong.

Planned op:
INMON SAKUSEN: 16th ARMY operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th ARMY operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
150 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Liuchow bombed and severely damaged.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines around Xmas island.
Some activities (resupply?) by suspected APDs at Canton island.
Radio intercepts indicate that enemy might have located the landing force in current op below.

Current op:
KATSUIRO SAKUSEN: first phase: operation is on-going, all TFs underway.

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Alert! enemy TF (6? ships (AM?), 18 fighters) at Merauke (NV Horns island/Torres strait). Most likely offloading supplies/air base units. 3rd FLEET alerted (tactical naval command in area Darwin-New Guinea-Java-Mindanao).
Two ground units at Milne Bay (SE Port Moresby).
Convoy located by submarine NE Cairns (possible returning from Port Moresby)

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
Submarines are concentrated near Xmas island (central Pacific).
Alert! many submarines located NW and SW of Rangoon, Burma. One small PB was sunk.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

24 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy offensive in progress in NE India. Units are now heading toward Dacca.
ALERT2! 60 enemy bombers re-based to Port Blair (however, there were no attack mission against our shipping).
Withdrawal of all enemy aircraft in NE India in effect (likely return in 24H).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon.
16th ARMY: in forward defensive positions with secure LOC to Chittagong. Dacca will be defended by three reinforced infantry regiments in 72H (Fort level three).
25th ARMY: all units are marching toward Palembang, where they will embark transports for Chittagong.
17th ARMY: 10th Division is heading toward Chittagong on transport ships. 52nd and 53rd Divisions are at Nagoya.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

3rd & 5th Air Division: conducting air interdiction operation targeting enemy units in open terrain east of Dacca. No enemy fighters or AAA-units. However, rain prevented most missions:

Japanese aircraft
Ki-21-IIa Sally x 49
Ki-43-Ic Oscar x 52

Enemy (255th Armoured BDE) ground losses:
44 casualties reported
Squads: 0 destroyed, 3 disabled
Non Combat: 1 destroyed, 23 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 38 (1 destroyed, 37 disabled)

21st Air Flotilla: defensive air operation over Chittagong.

Planned op:
INMON SAKUSEN: 16th ARMY operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th ARMY operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
150 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Liuchow airfield was damaged.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERTRadio intercepts and also air search indicate that enemy have a rather good picture of current op below.

Current op:
KATSUIRO SAKUSEN: first phase: operation is on-going, all TFs are underway.

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
ALERT two? enemy ships SE Rabaul (near Munda).
ALERT2! enemy TF (4-6? ships (AM?), 18 fighters) at Merauke (NV Horns island/Torres strait). Most likely offloading supplies/air base units. 3rd FLEET alerted (tactical naval command in area Darwin-New Guinea-Java-Mindanao).
Two ground units at Milne Bay (SE Port Moresby).
Convoy located by submarine NE Cairns (possible returning from Port Moresby)

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
Submarines are concentrated near Xmas island (central Pacific).
Alert! many submarines located NW and SW of Rangoon, Burma. One small PB was sunk.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

25 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy offensive in progress in NE India. Units are now heading toward Dacca. See attached SITMAP below.
ALERT2! 30+ enemy bombers at Port Blair (few and ineffective attack missions against our shipping).
ALERT3! As expected, enemy aircraft return to NE India at Calcutta (60+ Fighters, 30+ Bombers).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. 2 B-26 Marauder are shot down over our shipping.
16th ARMY: in forward defensive positions with secure LOC to Chittagong. Dacca will be defended by three reinforced infantry regiments in 48H.
25th ARMY: all units are marching toward Palembang (ETA is 48H), where they will embark transports for Chittagong.
17th ARMY: 10th Division is heading toward Chittagong on transport ships. 52nd and 53rd Divisions are at Nagoya.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

3rd & 5th Air Division: will conduct air interdiction operation targeting enemy units in open terrain east of Dacca. No enemy fighters or AAA-units. Most successful attack was made against:

255th Armoured BDE:
62 casualties reported
Squads: 1 destroyed, 3 disabled
Non Combat: 1 destroyed, 8 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 11 (1 destroyed, 10 disabled)

21st Air Flotilla: defensive air operation over Chittagong.

Planned op:
INMON SAKUSEN: 16th ARMY operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th ARMY operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
150 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Liuchow airfield was damaged.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERTEnemy air search activities indicate that enemy have a rather good picture of current op below.

Current op:
KATSUIRO SAKUSEN: first phase: operation is on-going, all TFs are underway.

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
ALERT One enemy DD attacked and sunk one xAKL at Munda.
ALERT2! enemy TF (4 xAKL and 1 AM) were destroyed while unloading troops at Merauke/Southern New Guinea:

Night Time Surface Combat, near Merauke at 89,124, Range 11,000 Yards

Japanese Ships
CL Natori
DD Shiratsuyu
DD Shinonome
DD Shirakumo
DD Shikinami

Allied Ships
xAKL Argus, Shell hits 18, and is sunk
xAKL Sarangami, Shell hits 3, Torpedo hits 1, and is sunk
xAKL Canopus, Shell hits 27, and is sunk
xAKL Hetton Bank, Shell hits 17, and is sunk
AM Outarde, Shell hits 8, and is sunk

Allied ground losses:
589 casualties reported
Squads: 0 destroyed, 0 disabled
Non Combat: 24 destroyed, 65 disabled
Engineers: 0 destroyed, 0 disabled

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
Submarines are concentrated near Xmas island (central Pacific).
Alert! many submarines located NW and SW of Rangoon, Burma. One small PB was sunk.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

26 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy offensive in progress in NE India. Units are heading toward Dacca.
ALERT2! several air battles over NE India. See below.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. Supplies and AAA-units will be delivered during next 24H.
16th ARMY: in forward defensive positions with secure LOC to Chittagong. Dacca will be defended by three reinforced infantry regiments in 24H. Warning order was given to mobile units (5 tank regiments) to launch a counter-attack east of Dacca.
25th ARMY: three divisions will embark transports at Palembang during next 24-48H. Then all army artillery will embark additional transports.
17th ARMY: 10th Division is heading toward Chittagong on transport ships. 52nd and 53rd Divisions are at Nagoya.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

21st Air Flotilla, 3rd & 5th Air Division: Air battle over NE India:
Our losses: 30+ fighters, 30+ bombers.
Enemy losses: 25+ fighters.

Most successful strike:
Morning Air attack on 75th IAC Regiment (and other tank units NE Dacca), at 56,37 , near Dacca
Japanese aircraft
Ki-21-IIa Sally x 6 (sadly, the additional 21 bombers of the sentai arrived late as well as unescorted and lost 16 bombers)
Ki-30 Ann x 23
Ki-43-Ic Oscar x 56
Ki-48-Ib Lily x 52
Ki-48-IIa Lily x 17

Enemy aircraft (LRCAP)
Kittyhawk I x 3
Kittyhawk IA x 1
P-40E Warhawk x 20

Japanese aircraft losses
Ki-21-IIa Sally: 2 damaged
Ki-43-Ic Oscar: 5 destroyed
Ki-48-Ib Lily: 4 damaged
Ki-48-Ib Lily: 1 destroyed by flak
Ki-48-IIa Lily: 3 damaged

Enemy aircraft losses
P-40E Warhawk: 3 destroyed

Enemy ground losses:
73 casualties reported
Squads: 0 destroyed, 8 disabled
Non Combat: 2 destroyed, 11 disabled
Engineers: 0 destroyed, 0 disabled
Guns lost 2 (1 destroyed, 1 disabled)
Vehicles lost 20 (1 destroyed, 19 disabled)

The air attacks against enemy airfield at Calcutta:
Morning Air attack on Calcutta , at 52,37. Weather in hex: Partial cloud
Raid detected at 32 NM, estimated altitude 29,000 feet.
Estimated time to target is 10 minutes

Japanese aircraft: A6M2 Zero x 24

Enemy aircraft
Kittyhawk I x 24
Kittyhawk IA x 9
P-40E Warhawk x 41

Japanese aircraft losses
A6M2 Zero: 3 destroyed

Enemy aircraft losses
Kittyhawk I: 1 destroyed
P-40E Warhawk: 3 destroyed

Morning Air attack on Calcutta , at 52,37 (was costly since CAP was twice the number expected).
Weather in hex: Partial cloud
Raid detected at 35 NM, estimated altitude 9,000 feet.
Estimated time to target is 10 minutes

Japanese aircraft
Ki-21-IIa Sally x 23
Ki-43-Ic Oscar x 32

Enemy aircraft
Kittyhawk I x 19
Kittyhawk IA x 8
P-40E Warhawk x 29

Japanese aircraft losses
Ki-21-IIa Sally: 8 destroyed, 4 damaged
Ki-43-Ic Oscar: 3 destroyed

Enemy losses
Kittyhawk IA: 1 destroyed
P-40E Warhawk: 1 destroyed
Airbase hits 10
Airbase supply hits 2
Runway hits 21

Aircraft Attacking:
16 x Ki-21-IIa Sally bombing from 6000 feet
Airfield Attack: 4 x 250 kg GP Bomb

Results: one fighter sentai and two bomber sentai are depleted and have moved to Rangoon for reorganization. All three were replaced by three fresh sentai at the frontline.
Air operations will continue as it is essential to interdict enemy ground units attacking toward Dacca.

Planned op:
INMON SAKUSEN: 16th ARMY operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th ARMY operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
130 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: NIL.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERTEnemy air search activities indicate that enemy have a rather good picture of current op.

Current op:
KATSUIRO SAKUSEN: first phase: operation is on-going, all TFs are underway.
Australian DD Vendetta was sunk near Caroline island by KB2.

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
Radio transmissions detected at Attu Island.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
Submarines are concentrated near Xmas island (central Pacific).
Alert! many submarines located NW and SW of Rangoon, Burma.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[Captain Cruft]

Superb info-graphics, thank you.

[PT boat skipper]

27 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy offensive in progress in NE India. Units are heading toward Dacca.
ALERT2! air battle NE Dacca over enemy units. See below.
ALERT3! enemy heavy bombers (B-17) attack own ground units at Comilla ineffectively (from 13,000 feet).
One enemy submarine (KIX) was confirmed sunk near Cocos island by Kongo TF (which also bombarded the island).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. Reinforcements, supplies and AAA-units will be delivered during next 24H.
16th Army: in forward defensive positions with secure LOC to Chittagong. Dacca is defended by three reinforced infantry regiments. Four tank regiments will launch a counter-attack east of Dacca in 48H.
25th Army: three divisions are embarked on transports. ETA Chittagong: eight days. Army artillery will finish embarkation on transports in 24h.
17th Army: 10th Division is heading toward Chittagong on transport ships. ETA: 48H. 52nd and 53rd Divisions are at Nagoya.
15th Army: will capture Katka IOT establish a forward major airfield (5th Air Division).

21st Air Flotilla, 3rd & 5th Air Division: Air battle over NE Dacca:
Our losses: 6 fighters, 8 bombers.
Enemy losses: 19 fighters.

Fighter sweep at 56,37 , near Dacca:
Japanese aircraft
Ki-43-Ic Oscar x 27 (64th Sentai): No losses

Allied aircraft
P-40E Warhawk x 25: 4 destroyed

Air interdiction of enemy ground units at 56,37 , near Dacca:
Weather in hex: Light rain

Japanese aircraft
Ki-30 Ann x 25: 2 destroyed, 3 damaged
Ki-43-Ic Oscar x 23: 2 destroyed
Ki-48-IIa Lily x 18: 1 destroyed, 3 damaged

Enemy aircraft
P-40E Warhawk x 10: 1 destroyed

Enemy ground losses (255th Armoured Brigade, 27th US Infantry Division):
44 casualties reported
Squads: 1 destroyed, 2 disabled
Non Combat: 0 destroyed, 2 disabled
Engineers: 0 destroyed, 0 disabled

Air operations will continue as it is essential to interdict enemy ground units attacking toward Dacca.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
145 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Henyang airfield was bombed and damaged. Special air operation will commence in 72H.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT suspected enemy transports located by submarine 12 hexes SE Caroline island.

Current op:
KATSUIRO SAKUSEN: first phase: operation is on-going, all TFs are underway.
Caroline island (atoll) was captured (no enemy resistance).

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Radio traffic at Brisbane.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! Many submarines located NW and SW of Rangoon, Burma.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

28 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy ground offensive in progress in NE India. Units are heading toward Dacca.
ALERT2! air battle NE Dacca. Enemy attack ground units at Dacca with 70+ medium bombers.
ALERT3! enemy ships (2+) spotted by naval air recce west of Chittagong (see map below).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets concentrated in area SW Chittagong and Singapore. 2nd Fleet will begin disembarkation at Chittagong during next 24H.
16th Army: in forward defensive positions with secure LOC to Chittagong. Dacca is defended by three reinforced infantry regiments. Four tank regiments will attack east of Dacca in 24-48H.
25th Army: Three divisions are embarked on transports. ETA Chittagong: seven days.
17th Army: 10th Division will begin disembarkation at Chittagong during next 24H. 52nd and 53rd Divisions are at Nagoya.
15th Army: will capture Katka IOT establish a forward major airfield (5th Air Division).

21st Air Flotilla, 3rd & 5th Air Division: Air battle:
Our losses: 8 fighters.
Enemy losses: 10+ fighters.

Fighter sweep over Calcutta:
Japanese aircraft
Ki-43-Ic Oscar x 34 (1st Sentai): losses: 8 fighters

Allied aircraft
Kittyhawk I x 6
Kittyhawk IA x 4: 1 destroyed
P-38E Lightning x 15: 1 destroyed
P-40E Warhawk x 3: 1 destroyed

Air sweep and interdiction of enemy ground units at 56,37 , near Dacca:
Weather in hex: Light rain

Japanese aircraft
Ki-43-Ic Oscar x 26 (64th Sentai): no losses

Enemy aircraft
Kittyhawk I x 3: 1 destroyed
Kittyhawk IA x 1: 1 destroyed
P-40E Warhawk x 2: 1 destroyed

Japanese aircraft (no losses)
Ki-21-IIa Sally x 25
Ki-43-Ic Oscar x 26
Ki-48-Ib Lily x 25

Enemy ground losses (75th IAC Regiment, 27th US Infantry Division):
54 casualties reported
Squads: 0 destroyed, 4 disabled
Non Combat: 0 destroyed, 15 disabled
Engineers: 0 destroyed, 1 disabled

Enemy air interdiction at Dacca:
Hurricane IIb Trop x 3
Kittyhawk I x 13
Kittyhawk IA x 5
Blenheim IV x 42
P-40E Warhawk x 6
Blenheim IV x 6
B-26 Marauder x 30
Hurricane IIb Trop x 5
B-26 Marauder x 10

Own ground losses:
325 casualties reported.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
79 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Henyang airfield was bombed and damaged. Special air operation will commence in 48H.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT enemy TF located by naval air recce 6 hexes SW Caroline island.
ALERT2 enemy TF located by radio intercepts 16 hexes east of Auckland. Incoming or outgoing? Convoy or CV?
ALERT3 spies landed from submarines report 19 ships (no major warships) in San Francisco harbour and a handful of bombers at nearby airfields. Suspected embarkation on-going?

Current op:
KATSUIRO SAKUSEN: first phase: operation will continue for another 24H and then second phase will commence.

Planned op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! Many submarines located W and SW of Rangoon, Burma.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

29 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy ground offensive in progress in NE India. Units are heading toward Dacca.
ALERT2! Enemy attack ground units at Dacca with 70+ medium bombers.
ALERT3! Yesterday's spotted enemy ships by naval air recce most likely moved two hexes west. Five AO(!) spotted two hexes further west.
Heavy Volume of Radio transmissions detected at Colombo (29,48).

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets are concentrated in area Chittagong and Singapore. KB1 (incl BB Yamato) will depart from Singapore in 24H.
2nd Fleet: 2nd Fleet HQ will disembark at Chittagong during next 24H. A suiraisentai will in 24H bombard the airfield at Port Diamond outside Calcutta.
16th Army: three divisions are in forward defensive positions with secure LOC to Chittagong. Dacca is defended by three reinforced infantry regiments. Four tank regiments will attack east of Dacca in 24H.
25th Army: Three divisions are embarked on transports. ETA Chittagong: six days.
17th Army: 10th Division will finish disembarkation at Chittagong during next 24H and then move to Comilla. 52nd and 53rd Divisions are at Nagoya awaiting shipping for embarkation and transport to Singapore.
15th Army: will capture Katka IOT establish a forward major airfield (5th Air Division).

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be to protect shipping at Chittagong. Secondary effort will be to continue the air interdiction operation against enemy units outside Dacca.
Our losses: 1 bomber (shot down by AAA).
Enemy losses: 0?.

Interdiction of enemy ground units at 56,37 , near Dacca: Severe storms

Japanese aircraft
Ki-21-IIa Sally x 22
Ki-43-Ic Oscar x 27
Ki-48-Ib Lily x 22 (1 destroyed by AAA)

Enemy ground losses (75th IAC Regiment, 254th Armoured Brigade):
11 casualties reported
Squads: 0 destroyed, 0 disabled
Non Combat: 0 destroyed, 7 disabled
Engineers: 0 destroyed, 1 disabled

Enemy air interdiction at Dacca: Clear sky
Hurricane IIb Trop x 17
Kittyhawk I x 9
Kittyhawk IA x 3
P-38E Lightning x 3
Blenheim IV x 31
B-26 Marauder x 40
P-40E Warhawk x 8

Own ground losses:
320 casualties reported.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
79 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Special air operation will commence in 48H (delayed 24H).

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT enemy TF (4 ships?) located by naval air recce 8 hexes SW Caroline island. One AVD was spotted by KB2 (no attacks were launched).
Heavy Volume of Radio transmissions detected at Pearl Harbor (180,107).
Radio transmissions detected at Tahiti (173,178).

Current op:
KATSUIRO SAKUSEN: first phase: this phase will finish in 72H with the withdrawal of BB Kirishima TF.
*activated* KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July. KB2 will begin withdrawing in 24H.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Noumea expands airfield to size 4
Noumea expands port to size 4

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Fuel will be shipped to Hokkaido asap IOT supply the heavy industries in that region.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! Many submarines located W and SW of Rangoon, Burma.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

30 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! enemy ground offensive in progress in NE India. Units are heading toward Dacca.
ALERT2! Enemy attack ground units east of Dacca with 30 B-17 heavy bombers at high altitude.
ALERT3! Enemy troop movements (likely Bde) IOT counter 4th Division.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets are concentrated in area Chittagong - Singapore. KB1 (incl BB Yamato) is underway.
2nd Fleet: Diamond harbour outside Calcutta was bombarded with little effect (no enemy aircraft was present).
16th Army: three divisions are in forward defensive positions with secure LOC to Chittagong. Dacca is defended by three reinforced infantry regiments. Four tank regiments counter-attacked east of Dacca and defeated an enemy recce regiment (enemy lost 90+ vehicles). The railway is again open to Dacca.
25th Army: Three divisions are embarked on transports. ETA Chittagong: five days.
17th Army: 10th Division is marching to Comilla. 52nd and 53rd Divisions are at Nagoya awaiting shipping for embarkation and transport to Singapore.
15th Army: will capture Katka IOT establish a forward major airfield (5th Air Division).

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be to protect shipping at and near Chittagong. Secondary effort will be to continue the air interdiction operation against enemy units outside Dacca and in front of 4th Division.
Bad weather over Chittagong prevented air operations.
Our losses: 0.
Enemy losses: 0.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
Only 40 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Special air operation will commence in 24H.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
Radio transmissions detected at Tahiti (173,178).

Current op:
KATSUIRO SAKUSEN: first phase: this phase will finish in 72H with the withdrawal of BB Kirishima TF.
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Fuel will be shipped to Hokkaido asap IOT supply the heavy industries in that region.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! one enemy submarine located by convoy escorts near Karafuto.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

31 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! Enemy ground offensive in progress in NE India. Note: are units actually heading toward Dacca or are enemy withdrawing from the Dacca area?
ALERT2! Enemy air interdiction against tank units east of Dacca.

Current op:
INMON SAKUSEN:
16th Army: Three divisions are in forward defensive positions with secure LOC to Chittagong. Dacca is defended by three, in 48H four, reinforced infantry regiments.
25th Army: Three divisions are embarked on transports. ETA Chittagong: four days.
17th Army: 10th Division is marching to Comilla. 52nd and 53rd Divisions will in 24H begin embarking transports at Nagoya for Singapore.
15th Army: 33rd Division will in 24H launch the first attack to capture Katka.
4th Div: will attack Kalemyo in 72H.

Combined Fleet: fleet assets are concentrated in area Chittagong - Singapore protecting the transports of 25th Army.
2nd Fleet: Diamond harbour outside Calcutta was again bombarded with little effect.

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be to protect Chittagong.
Secondary effort will be to continue the air interdiction operation against enemy units outside Dacca and in front of 4th and 33rd Divisions.
Our losses: 1 bomber (AAA).
Enemy losses: 0.

Air interdiction against enemy ground units NE Dacca:
Ki-43-Ic Oscar x 29 (sweep)
Ki-21-IIa Sally x 20
Ki-30 Ann x 20
Ki-43-Ic Oscar x 27
Ki-48-Ib Lily x 20
Ki-48-IIa Lily x 22

Enemy ground losses:
111 casualties reported
Squads: 0 destroyed, 9 disabled
Non Combat: 0 destroyed, 12 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 15 (1 destroyed, 14 disabled)

Enemy air interdiction against tank units E Dacca:
Hurricane IIb Trop x 22 (sweep)
Blenheim IV x 34
B-17E Fortress x 24
B-26 Marauder x 21
P-40E Warhawk x 12

Japanese ground losses:
Vehicles lost 59 (6 destroyed, 53 disabled)

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
40 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Special air operation conducted: Chungking airfield was attacked at night. In the morning, fighter sweeps met no enemy aircraft in the air.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT! Enemy launched a hit and run mission and succeeded to re-capture Caroline atoll:
Enemy consisted of two bombardment TFs: CL Marblehead + 2DD, CL Phoenix + 2DD and finally a landing force of 10 APDs with a USMC Raider Bn.
Own losses are only a company of naval guard forces. Note: if enemy had attacked 24H earlier or 24H later, our forces would have been in a proper position.

Current op:
KATSUIRO SAKUSEN: first phase: this phase will finish in 48H. During next 48H BB Kirishima TF and KB2 will destroy any remaining enemy TFs at or near Caroline atoll.
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Heavy Volume of Radio transmissions detected at Auckland (115,185). Most likely the arrival of a large convoy spotted several days earlier.
Radio transmissions detected at Luganville (120,150). Might indicate a build-up or a naval search seaplane base.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Reorganization of naval Air Flotillas: 11th Air Flotilla to Ominato, 12th Air Flotilla to Yokosuka and 13th Air Flotilla to Oita.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! many enemy submarines west of Rangoon.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

01 June 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! Enemy is withdrawing to NW from Dacca area. Note: enemy might believe our reinforcements are a reaction to his (aborted) offensive against Dacca, rather than a planned action to take Ledo.
ALERT2! enemy 22nd (East African) Brigade spotted by air recce near Imphal trying to block 4th Division's advance.

Current op:
INMON SAKUSEN:
16th Army: Three divisions are in forward defensive positions with secure LOC to Chittagong.
25th Army: Three divisions are embarked on transports. ETA Chittagong: 72H.
17th Army: 10th Division is marching to Comilla. 52nd and 53rd Divisions will finish embarking transports at Nagoya for Singapore in 24H.
15th Army: 33rd Division attacked Katka:

Attacking force 10693 troops, 161 guns, 54 vehicles, Assault Value = 347, Japanese adjusted assault: 293
Defending force 6733 troops, 86 guns, 51 vehicles, Assault Value = 265, enemy adjusted defense: 233, terrain(+), preparation(-), experience(-), supply(-)
Japanese engineers reduce fortifications to 0
Japanese assault odds: 1 to 1 (fort level 0)

Japanese ground losses:
496 casualties reported
Squads: 1 destroyed, 29 disabled
Non Combat: 0 destroyed, 1 disabled
Engineers: 0 destroyed, 7 disabled

Enemy ground losses:
217 casualties reported
Squads: 0 destroyed, 31 disabled
Non Combat: 0 destroyed, 4 disabled
Engineers: 0 destroyed, 0 disabled

Assaulting units:
33rd/B Division
55th Engineer Regiment
33rd/C Division
55th Mountain Gun Regiment
15th Medium Field Artillery Regiment
21st Medium Field Artillery Battalion

Defending enemy units:
1st Burma/A Division
1st Burma/B Division
1st Burma Auxiliary AA Regiment

4th Div: will attack Kalemyo in 48H.

Combined Fleet: fleet assets are concentrated in area Chittagong - Singapore protecting the transports of 25th Army. KB1 was most likely spotted N of Medan, Sumatra. Note: this might actually deter to enemy from interfering with the transports of 25th Army.
2nd Fleet: will support transportation of 25th Army in 48H.

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be continue the air interdiction operation against enemy units in front of 4th and 33rd Divisions.
Secondary effort will be to begin interdiction of enemy airfields in NE India.
Our losses: 2 bombers (AAA).
Enemy losses: 0.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
80 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Changsha airfield was bombed and damaged.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT! enemy TFs withdrawed to Tahiti. I-30 ambushed and sank DD Cassin.

Current op:
KATSUIRO SAKUSEN: first phase: this phase will finish in 24H.
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby is now level 7 airfield.

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Reorganization of naval Air Flotillas: 11th Air Flotilla to Ominato, 12th Air Flotilla to Yokosuka and 13th Air Flotilla to Oita.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! many enemy submarines west of Rangoon.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

DATE: 02 JUNE 1942

TO: COMBINED FLEET HQ

FROM: INMON SAKUSEN TF01 (25th Army 1)

TEXT: WE ARE UNDER HEAVY AIR ATTACKS FROM ENEMY CARRIER AIRCRAFT. MANY TRANSPORTS HIT AND BURNING. REQUESTS IMMEDIATE AIR SUPPORT.

[PT boat skipper]

DATE: 02 JUNE 1942

FROM: ADMIRAL YAMAMOTO ISOROKU, COMBINED FLEET COMMANDER

TO: KB1, TF NAGATO, TF MUTSU, TF ASHIGARA, TF CHOKAI, 2nd FLEET TF NACHI, 21st AIR FLOTILLA, 22nd AIR FLOTILLA

TEXT: COMMENCE DEFENSIVE COUNTERATTACK

[PT boat skipper]

02 June 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! ENEMY CARRIERS SPOTTED. 25TH ARMY TRANSPORTATION TF ATTACKED (see initial combat report in next post)

Current op:
INMON SAKUSEN:
16th Army: Three divisions are in forward defensive positions with secure LOC to Chittagong.
25th Army: heavy losses due to air attacks (see next post). Army Commander will submit full damage report in 24-48H.
17th Army: 10th Division at Comilla. 52nd and 53rd Divisions will depart for Singapore in 24H.
15th Army: 33rd Division will attack Katka again in 24H:
4th Div: will attack Kalemyo in 24-48H.

Combined Fleet: will conduct defensive counterattack.
2nd Fleet: will support Combined Fleet.

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be continue the air interdiction operation against enemy units in front of 4th and 33rd Divisions.
21st Air Flotilla will support Combined Fleet.
Our losses: 2 bombers (AAA).
Enemy losses: 2 (airfield).

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
80 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Chungking was swept at max range from Hankow. Own losses: 12 fighters, enemy losses: 4+ fighters (elite AVG 2/3).

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
NIL

Current op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Reorganization of naval Air Flotillas: 11th Air Flotilla to Ominato, 12th Air Flotilla to Yokosuka and 13th Air Flotilla to Oita.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! many enemy submarines west of Rangoon.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

02 June 1942

25th ARMY TF 01

NOTE: is this a major setback or a disaster? Combined Fleet's defensive counterattack needs to succeed IOT prevent the later outcome. We will know for sure tomorrow.


1ST ATTACK
Morning Air attack on TF, near Rangoon at 51,54
Weather in hex: Thunderstorms

Japanese aircraft
A6M2 Zero x 6

Enemy aircraft
Albacore I x 17
Fulmar II x 13
Martlet II x 16
Swordfish I x 11
F4F-3 Wildcat x 16
F4F-4 Wildcat x 16
SBD-3 Dauntless x 51

Enemy aircraft losses
Fulmar II: 1 destroyed
SBD-3 Dauntless: 3 damaged

Japanese Ships
CL Kinu, Bomb hits 1, on fire
xAK Johore Maru, Bomb hits 2, heavy fires, heavy damage
xAK Hakonesan Maru, Bomb hits 2, heavy fires, heavy damage
xAK Nissyu Maru
xAK Zenyo Maru, Torpedo hits 2, on fire, heavy damage
DD Fumizuki
xAK Shinryu Maru, Bomb hits 4, heavy fires, heavy damage
xAK Tatutaki Maru, Bomb hits 2, heavy fires
xAP Dairen Maru
xAK Aso Maru
DD Kikuzuki
xAK Kinsyo Maru, Bomb hits 1, heavy fires, heavy damage
xAP Ukishima Maru, Bomb hits 2, on fire
xAK Nako Maru
xAK Mikasa Maru, Bomb hits 3, heavy fires, heavy damage
xAP Suwa Maru, Bomb hits 1, on fire
xAK Toko Maru, Torpedo hits 1
BB Fuso, Bomb hits 2
xAK Kamoi Maru, Torpedo hits 3, and is sunk
xAK Yamazuki Maru

Japanese ground losses:
1376 casualties reported
Squads: 64 destroyed, 60 disabled
Non Combat: 54 destroyed, 44 disabled
Engineers: 4 destroyed, 4 disabled
Guns lost 16 (12 destroyed, 4 disabled)
Vehicles lost 1 (1 destroyed, 0 disabled)


2ND ATTACK
Morning Air attack on TF, near Rangoon at 51,54
Weather in hex: Thunderstorms

Japanese aircraft
A6M2 Zero x 2

Enemy aircraft
SBD-3 Dauntless x 17

Enemy aircraft losses
SBD-3 Dauntless: 1 destroyed, 1 damaged

Japanese Ships
xAK Kazuura Maru, Bomb hits 1, heavy fires
AK Aratama Maru
xAK Monji Maru, Bomb hits 1, on fire
xAK Mikasa Maru, Bomb hits 1, heavy fires, heavy damage
xAK Aso Maru, Bomb hits 2, heavy fires, heavy damage
xAK Zenyo Maru, and is sunk

Japanese ground losses:
800 casualties reported
Squads: 25 destroyed, 21 disabled
Non Combat: 47 destroyed, 56 disabled
Engineers: 1 destroyed, 3 disabled


3RD ATTACK
Afternoon Air attack on TF, near Rangoon at 51,54
Weather in hex: Thunderstorms

Japanese aircraft
A6M2 Zero x 5

Japanese aircraft losses
A6M2 Zero: 1 destroyed

Enemy aircraft
Albacore I x 30
Fulmar II x 13
Martlet II x 29
Swordfish I x 11
F4F-3 Wildcat x 16
F4F-4 Wildcat x 32
SBD-3 Dauntless x 83
TBF-1 Avenger x 14

Enemy aircraft losses
Albacore I: 2 damaged
Albacore I: 1 destroyed by flak
SBD-3 Dauntless: 10 damaged
TBF-1 Avenger: 1 damaged

Japanese Ships
xAK Monji Maru, Bomb hits 2, heavy fires, heavy damage
BB Mutsu
xAK Kenyo Maru, Bomb hits 3, heavy fires, heavy damage
AK Yamasimo Maru
xAP Kowa Maru
xAK Lyons Maru, Bomb hits 1
AMC Nosiro Maru
AMC Kinryu Maru, Bomb hits 1, Torpedo hits 2, and is sunk
xAK Teiyo Maru
xAK Toko Maru, on fire
BB Nagato, Bomb hits 1
xAP Keihuku Maru, Bomb hits 2, Torpedo hits 1, and is sunk
xAP Kasado Maru
xAK Nissyu Maru
xAK Toei Maru, Bomb hits 1, heavy fires
xAK Arabia Maru
xAK Durban Maru
CA Atago, Bomb hits 1, on fire
xAP Hoten Maru
xAK Tarushima Maru, Bomb hits 1, on fire, heavy damage
BB Fuso, Bomb hits 3
xAK Tusima Maru, Bomb hits 3, heavy fires, heavy damage
xAK Taifuku Maru, Bomb hits 2, heavy fires, heavy damage
AV Sagara Maru
xAK Yamakaze Maru
xAP Taizan Maru
xAK Tatukami Maru
xAK Kazuura Maru, Bomb hits 2, heavy fires, heavy damage
xAP Kanzyu Maru, Bomb hits 3, heavy fires, heavy damage

Japanese ground losses:
3445 casualties reported
Squads: 89 destroyed, 82 disabled
Non Combat: 100 destroyed, 58 disabled
Engineers: 1 destroyed, 1 disabled
Guns lost 85 (62 destroyed, 23 disabled)
Vehicles lost 94 (83 destroyed, 11 disabled)

[PT boat skipper]

03 June 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! ENEMY CARRIERS: withdrawed to NW. No attacks launched.
Cocos Island built level five airfield.

Current op:
INMON SAKUSEN:
16th Army: Three divisions are in forward defensive positions with secure LOC to Chittagong.
25th Army: All remaining transports reached Rangoon safely. Army Commander will submit full damage report in 24H.
17th Army: 10th Division at Comilla. 52nd and 53rd Divisions are underway for Singapore.
15th Army: 33rd Division captured Katka:

Attacking force 10466 troops, 161 guns, 54 vehicles, Assault Value = 325, Japanese adjusted assault: 241
Defending force 6435 troops, 86 guns, 51 vehicles, Assault Value = 233, enemy adjusted defense: 119
Japanese assault odds: 2 to 1 (fort level 0)
Japanese forces CAPTURE Katha !!!

Combat modifiers
Defender: terrain(+), leaders(+), preparation(-), fatigue(-)
experience(-), supply(-)
Attacker: shock(+)

Assaulting units:
33rd/B Division
55th Engineer Regiment
33rd/C Division
15th Medium Field Artillery Regiment
55th Mountain Gun Regiment
21st Medium Field Artillery Battalion

Japanese ground losses:
252 casualties reported
Squads: 0 destroyed, 18 disabled
Non Combat: 0 destroyed, 2 disabled
Engineers: 0 destroyed, 7 disabled

Enemy ground losses:
2177 casualties reported
Squads: 55 destroyed, 51 disabled
Non Combat: 121 destroyed, 12 disabled
Engineers: 23 destroyed, 0 disabled
Guns lost 37 (34 destroyed, 3 disabled)
Vehicles lost 41 (41 destroyed, 0 disabled)
Units retreated 3:

1st Burma/A Division
1st Burma/B Division
1st Burma Auxiliary AA Regiment

4th Div: captured Kalemyo!.

Attacking force 9558 troops, 118 guns, 0 vehicles, Assault Value = 380, Japanese adjusted assault: 304
Defending force 1344 troops, 10 guns, 7 vehicles, Assault Value = 68, Allied adjusted defense: 28

Japanese assault odds: 10 to 1 (fort level 1)
Japanese forces CAPTURE Kalemyo !!!

Combat modifiers
Defender: terrain(+), preparation(-), fatigue(-), morale(-)
experience(-)
Attacker: shock(+), leaders(+), disruption(-)

Assaulting units:
4th/B Division
4th/A Division
4th/C Division

Japanese ground losses:
478 casualties reported
Squads: 2 destroyed, 46 disabled
Non Combat: 0 destroyed, 0 disabled
Engineers: 0 destroyed, 4 disabled

Enemy ground losses:
428 casualties reported
Squads: 16 destroyed, 15 disabled
Non Combat: 18 destroyed, 2 disabled
Engineers: 2 destroyed, 0 disabled
Guns lost 3 (1 destroyed, 2 disabled)
Vehicles lost 6 (6 destroyed, 0 disabled)
Units retreated 2:

1st Gloucestershire Battalion
9th Burma Rifles Battalion

Combined Fleet: defensive counterattack was a success - all transports reached Rangoon safely. Enemy retreated to the NW without giving battle..
2nd Fleet: reached Rangoon.

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be continue the air interdiction operation against remaining enemy units NE Dacca.
21st Air Flotilla supports Combined Fleet.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
100 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Liuchow airfield was bombed.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
NIL

Current op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Reorganization of naval Air Flotillas: 11th Air Flotilla to Ominato, 12th Air Flotilla to Yokosuka and 13th Air Flotilla to Oita.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! many enemy submarines west of Rangoon.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.

[PT boat skipper]

DATE: 04 JUNE 1942

FROM: 26th AIR FLOTILLA

TO: COMBINED FLEET
CC: 4th FLEET, 4th AIR DIVISION, 14th ARMY

TEXT: ENEMY LANDING FORCE SUPPORTED BY AT LEAST ONE ENEMY CARRIER SPOTTED AND ATTACKED 500 MILES (12 HEXES) NE PALMYRA. SEE ATTACHED COMBAT REPORT BELOW.






Afternoon Air attack on TF, near Palmyra at 178,126

Weather in hex: Light cloud

Raid detected at 40 NM, estimated altitude 7,000 feet.
Estimated time to target is 14 minutes

Japanese aircraft
G4M1 Betty x 18

Enemy aircraft
F4F-4 Wildcat x 9

Japanese aircraft losses
G4M1 Betty: 7 destroyed, 1 damaged
G4M1 Betty: 1 destroyed by flak

No Allied losses

Enemy Ships
xAP Am. Press
xAP Nightingale

Aircraft Attacking:
7 x G4M1 Betty launching torpedoes at 200 feet
Naval Attack: 1 x 18in Type 91 Torpedo

CAP engaged:
VMF-223 with F4F-4 Wildcat (3 airborne, 6 on standby, 0 scrambling)
3 plane(s) intercepting now.
Group patrol altitude is 11000 , scrambling fighters between 6000 and 11000.
Time for all group planes to reach interception is 22 minutes

[PT boat skipper]

ORDER

DATE: 04 JUNE 1942

FROM: COMBINED FLEET

TO: KB2 (RADM YAMAGUCHI)

TEXT:
SITUATION: MANY ENEMY CARRIERS ARE LOCATED NEAR CEYLON. ENEMY TF OPERATING NE PALMYRA ISLAND MUST BE SINGLE CV OR CVE.
MISSION: NO CHANGE (KATSUIRO SAKUSEN).
TASK: DESTROY ENEMY TF NE PALMYRA.

[PT boat skipper]

REPORT

DATE: 04 JUNE 1942

FROM: 25TH ARMY COMMANDER

TO: SOUTHERN ARMY COMMANDER

TEXT: BELOW NUMBERS INDICATE WHEN (D=DAYS) NAMED SUBUNITS WILL BE COMBAT-READY (90+ PERCENT STRENGTH).

25TH ARMY HQ: 14D
25TH ARMY ARTILLERY: 3D
IGD: 30D
5TH DIVISION: 3D
18TH DIVISION: 14D
56TH DIVISION: 14D


LOSSES IN TRANSPORTS:
xAP: 3
FAST xAK: 5
LARGE xAK: 5
SMALL xAK: 6
AMC: 1

[PT boat skipper]

04 June 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
ALERT! ENEMY CARRIERS: withdrawed W toward Ceylon.
Ledo built level eight airfield.
7th Armoured Brigade located by air recce, at 60,39 , near Imphal. Reacting to 4th Division's advance.

Current op:
INMON SAKUSEN:
16th Army: Three divisions are in forward defensive positions with secure LOC to Chittagong.
25th Army: Three Divisions at Rangoon (See damage report in above post).
17th Army: 10th Division at Comilla. 52nd and 53rd Divisions are underway for Singapore.
15th Army: 33rd Division will advance toward Myitkynia.

Combined Fleet: KB1 will be reinforced with CV Junyo and CV Hiyo in 26 days.
2nd Fleet: NIL.

21st Air Flotilla, 3rd & 5th Air Division: main effort during next 24H will be air interdiction operation against enemy airfields in NE India.
21st Air Flotilla will be assigned a new Flotilla commander.

Planned op:
INMON SAKUSEN: 16th Army operation II: Landing at Port Blair.
SANGOKUICHI SAKUSEN: 16th Army operation III:



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
80 fighters located by air recce at Chungking.

Current op:
North China Army (incl 1st, Mongol and 12th Armies): Mongol and 12th Armies will replace remaining 1st Army units in frontline positions.
China Exp Army (incl 11th and 13th Armies): NIL.
25th Air Flotilla: Changteh airfield was bombed and damaged.

Planned op:
SANGOKUICHI SAKUSEN: the total conquest of China.



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT! TF with carrier? located NE Palmyra (se above post).

Current op:
KATSUIRO SAKUSEN: second phase: Withdrawal of KB2 to Kure for TR3 (training, rest, repair and refit) in June-July.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
NIL

Current op:
Buildup of air (lvl 4) and naval bases at: Madang and Tulagi.

Planned op:
KATSUIRO SAKUSEN: third phase: New Caledonia and SE Port Moresby



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Reorganization of naval Air Flotillas: 11th Air Flotilla to Ominato, 12th Air Flotilla to Yokosuka and 13th Air Flotilla to Oita.

Planned op:
Garrison units will be transported from Ominato to the Kurile islands.



ASW and CONVOY COMMAND

Enemy sitrep:
No submarine activity reported in area Singapore-Tokyo.
ALERT! enemy submarines west of Rangoon.

Current ASW op and convoy movements:
GREEN: Singapore to Japan.
GREEN: Borneo to Truk.
GREEN: Shanghai/Korea/Manchuko to Japan.
GREEN: Karafuto-Hokkaido to Honshu (Japan).

GREEN = no losses due to enemy action.
AMBER = minor losses due to enemy action.
RED = losses due to enemy action.

Planned ASW op:
Construction of airfields North Borneo - Central Philippines.