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

[PT boat skipper]

The game continues after two weeks intermission

13 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Enemy continue to attack 16th Army with fighters and bombers. No interception.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong.
16th ARMY: forward defensive positions reinforced with heavy artillery units.
21st Division guarding LoC to 16th ARMY.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. Attack will be launched in 24H.
15th Army will invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla will protect Chittagong.

TORA SAKUSEN-2: all of 25th ARMY are marching to Djambi for the final battle on Sumatra.

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and south of Johnston island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

Current op:
North China Army (incl 1st and 12th Army): NIL.
11th Army: NIL.
13th Army: NIL.
25th Air Flotilla: Changsha airfield was swept - no enemy fighter encountered.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines south of Johnston island.
ALERT2 enemy TF located yesterday 8 hexes NV KB2 (west Johnston island) attacked TF IVO Johnston Island.
ALERT3 enemy TF located 12 hexes SV Johnston island

Current op:
14th ARMY operation III (HAWAII): Johnston island: the second landing was repulsed. All units will withdraw to Xmas island ASAP. This part of the operation has been a tactical defeat - however, the main goal of this operation is to prevent the allies of reinforcing eastern India.

US defenders of Johnston island (2241 troops, 87 guns, 0 vehicles, Assault Value = 124):
34th Combat Engineer Regiment
Fanning Island Det.
2nd USMC Parachute Bn /1
Johnston USN CPNAB
Johnston (Det.) Defense Battalion
2nd Marine Defense Battalion

2nd landing (3872 troops, 117 guns, 0 vehicles, Assault Value = 34):
9th Infantry Regiment
1st Infantry Rgt /1
63rd Nav Gd /1
Yokosuka 3rd SNLF
1st Formosa Inf. Rgt /1
1st Engineer Regiment
1st Field Artillery Regiment
20th Infantry Rgt /1
48th FA Rgt /1

A naval battle occured at day time near Johnston island:

Japanese Ships
CA Aoba, Shell hits 9, on fire
CA Furutaka, Shell hits 9
DD Kasumi
DD Shigure
DD Samidare
DD Yamakaze, Shell hits 1, on fire
DD Kawakaze, Shell hits 3, heavy fires

Allied Ships
CA New Orleans, Shell hits 2
CL Raleigh, Shell hits 1
CL Phoenix
DD Laffey, Shell hits 7, and is sunk
DD O'Brien, Shell hits 1, on fire
DD Cummings
DD Reid, Shell hits 3

Then KB2 attacked:

Japanese aircraft
A6M2 Zero x 14
B5N2 Kate x 25
D3A1 Val x 46

Japanese aircraft losses
B5N2 Kate: 3 damaged
D3A1 Val: 5 damaged
D3A1 Val: 1 destroyed by flak

Allied Ships
DD O'Brien, on fire
CA New Orleans, Bomb hits 2, heavy fires
DD Reid, Bomb hits 2, heavy fires, heavy damage
CL Phoenix
CL Raleigh, Bomb hits 5, and is sunk
DD Cummings, Bomb hits 1, on fire

Tomorrow will be an interesting day.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops, supply convoy.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby).



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

14 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Enemy continue to attack 16th Army with fighters and bombers. No interception since all own fighter units protect Chittagong.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong.
16th ARMY: in forward defensive positions.
21st Division guarding LoC to 16th ARMY.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. Japanese Shock attack:

Attacking force 5886 troops, 67 guns, 90 vehicles, Assault Value = 228 - Japanese adjusted assault: 122, shock(+), fatigue(-)
Defending force 3092 troops, 19 guns, 44 vehicles, Assault Value = 126 - Allied adjusted defense: 119, terrain(+), forts(+), experience(-)
Japanese assault odds: 1 to 1 (fort level 2) - Japanese Assault reduces fortifications to 1

Japanese ground losses:
572 casualties reported
Squads: 1 destroyed, 40 disabled
Non Combat: 0 destroyed, 3 disabled
Engineers: 0 destroyed, 19 disabled
Guns lost 7 (1 destroyed, 6 disabled)

Allied ground losses:
190 casualties reported
Squads: 4 destroyed, 13 disabled
Non Combat: 0 destroyed, 3 disabled
Engineers: 0 destroyed, 0 disabled
Guns lost 9 (1 destroyed, 8 disabled)

Assaulting units:
24th Infantry Regiment
2nd Engineer Regiment
7th Tank Regiment
2nd Field Artillery Regiment

Defending units:
46th Indian Brigade
23rd Indian Mountain Gun Regiment
RAF 221 Group Wing /1

15th Army will invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla will protect Chittagong.

TORA SAKUSEN-2: all of 25th ARMY are marching to Djambi for the final battle on Sumatra. ETA is 72H.

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and south of Johnston island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

Current op:
North China Army (incl 1st and 12th Army): NIL.
11th Army: NIL.
13th Army: NIL.
25th Air Flotilla: Hengyang airfield was bombed.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines south of Johnston island.
ALERT2 enemy TF attacked KB2 (see below)

Current op:
14th ARMY operation III (HAWAII): all units will withdraw to Xmas island.

The second day of naval battles east of Johnston island:

1st Night Time Surface Combat, near Johnston Island at 168,110, Range 5,000 Yards (0% moonlight)

Japanese Ships
CA Chikuma
DD Akigumo, Shell hits 2, on fire
DD Isokaze, Shell hits 1

Allied Ships
CL Honolulu
DD Mustin
DD Walke
DD Conyngham

2nd Night Time Surface Combat, near Johnston Island at 167,111, Range 7,000 Yards:

Japanese Ships
CV Hiryu, Shell hits 3
CV Soryu, Shell hits 5, on fire (still fully operational)
CV Shokaku, Shell hits 1
CV Zuikaku, Shell hits 1
CS Chiyoda
DD Kagero
DD Hatsukaze
DD Shiranui
DD Tokitsukaze
DD Urakaze, Shell hits 2
DD Hamakaze
DD Tanikaze

Allied Ships
CL Honolulu, Shell hits 3
DD Mustin
DD Walke
DD Conyngham

Two US DDs were sunk (one by I-29 and one by KB2). One PB and one xAK were sunk.

Planned op:
NIL (except that USS Honolulu must be sunk)



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

15 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Enemy continued to attack 16th Army (NE Dacca) with fighters and bombers. No interceptions were made since all own fighter units is to protect Chittagong and the offloading of ships.
ALERT: two ships (DD?) were discovered by air recce SW Chittagong.
ALERT2: two ships (DD) discovered E Cocos island and were then attacked with 18 torpedobombers from Xmas island (IO).
ALERT3: KB3 discovered small enemy convoy (1 APD, 1+? xAK) SW Perth (1 ADP was hit and damaged).


Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. Port Blair will be bombarded in 24H.
16th ARMY: in forward defensive positions.
21st Division guarding LoC to 16th ARMY.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. Another shock attack is to be launched in 24H.

15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla is to protect Chittagong.

TORA SAKUSEN-2: all of 25th ARMY are marching to Djambi for the final battle on Sumatra. ETA is 48H.

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and south of Johnston island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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 is to be bombed.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines south of Johnston island.
ALERT2 enemy TF attacked KB2 again (see below)

Current op:
14th ARMY operation III (HAWAII): all units is to withdraw to Xmas island.

The third day of naval battles east of Johnston island:

Day Time Surface Combat, near Johnston Island at 172,116, Range 26,000 Yards:

Japanese Ships
CV Hiryu, Shell hits 1
CV Soryu, Shell hits 5
CV Shokaku, Shell hits 1
CV Zuikaku, Shell hits 3
CS Chiyoda, Shell hits 4, on fire
CA Chikuma
DD Akigumo, Shell hits 1
DD Kagero
DD Hatsukaze
DD Isokaze
DD Shiranui
DD Tokitsukaze
DD Urakaze
DD Hamakaze
DD Tanikaze, Shell hits 1

Enemy Ships
CL Honolulu, Shell hits 2
DD Mustin, Shell hits 3, on fire
DD Walke
DD Conyngham

Morning Air attack on TF, near Lihue at 172,117, Weather in hex: Overcast:

Japanese aircraft
A6M2 Zero x 56
B5N2 Kate x 28
D3A1 Val x 34

Allied Ships
DD Walke, Bomb hits 2, heavy fires, heavy damage
CL Honolulu, Bomb hits 6, Torpedo hits 2, and is sunk
DD Mustin, Bomb hits 1, heavy fires, heavy damage
DD Conyngham, Bomb hits 2, heavy fires, heavy damage

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
ALERT: APDs spotted SE Port Moresby.

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

16 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Enemy continued to attack 16th Army (NE Dacca) with fighters and bombers. No interceptions were made since all own fighter units is to protect Chittagong and the offloading of ships.
ALERT: two ships (DD?) located by air recce NW Port Blair.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. Port Blair was bombarded.
16th ARMY: in forward defensive positions.
21st Division guarding LOC to 16th ARMY.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. Another shock attack was launched:

Attacking force 5633 troops, 67 guns, 90 vehicles, Assault Value = 205, Japanese adjusted assault: 204, shock(+)
Defending force 2937 troops, 18 guns, 44 vehicles, Assault Value = 108, Allied adjusted defense: 143, terrain(+), experience(-)
Japanese assault odds: 1 to 1 (fort level 1), Japanese Assault reduces fortifications to 0

Japanese ground losses:
293 casualties reported
Squads: 0 destroyed, 17 disabled
Non Combat: 0 destroyed, 2 disabled
Engineers: 0 destroyed, 2 disabled

Allied ground losses:
249 casualties reported
Squads: 4 destroyed, 35 disabled
Non Combat: 0 destroyed, 5 disabled
Engineers: 0 destroyed, 2 disabled

Assaulting units:
24th Infantry Regiment
2nd Engineer Regiment
7th Tank Regiment
2nd Field Artillery Regiment

Defending units:
46th Indian Brigade
23rd Indian Mountain Gun Regiment
RAF 221 Group Wing

15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla is to protect Chittagong (several base forces are disembarking during next 24H).

TORA SAKUSEN-2: all of 25th ARMY are marching to Djambi for the final battle on Sumatra. ETA is 24H.
A naval battle occurred west of JAVA: Night Time Surface Combat, near Christmas Island IO at 42,101, Range 2,000 Yards
Japanese Ships: DD Ikazuchi, DD Inazuma
Enemy Ships: DD Blue, DD Ralph Talbot, Shell hits 4, heavy fires, heavy damage.

PERTH RAID: KB1 and KB3.
KB3 sank an xAK south of Perth loaded with 15+ Kittyhawk fighters. One damaged APD trying to head back to Perth was also sunk (by KB1).
KB1 launched a raid on shipping at Perth. Enemy had very few fighters on CAP (about ten P-40 Warhawk located at Perth).
Enemy losses:
AM Penguin, TK Strix, AMc Bonthorpe, TK Talang Akar, AM Whyalla and TK Iris.
There are 25+ ships docked in the inner harbour.

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and south of Johnston island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines south of Johnston island.
Radio-intercepts indicated great propaganda value in the sinking of USS Honolulu yesterday.

Current op:
14th ARMY operation III (HAWAII): all units is to withdraw to Xmas island.
CA Aoba is only capable of moving at 5 knots and is still very close to Johnston island. It is likely that she will be lost before reaching Palmyra island. Heavy support will be provided in 72H.

Planned op:
NIL.



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
ALERT: two units spotted at Milne Bay (SE Port Moresby). The APDs might have withdrawn.

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

17 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Enemy did not attack 16th Army (NE Dacca) with fighters and bombers. Some fighters (Lightning!) were on LRCAP over Akyab and shot down six Ki-48 bombers.
ALERT: two AKEs are located running north from Perth (one DD from KB1 is to give chase).
ALERT2: two ships (DD?) north of Cocos island (might be previous engaged destroyers)


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 Chittangong.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. The third shock attack will be launched in 24H.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla is protecting Chittagong (supplies are offloading during next 24H).

TORA SAKUSEN-2: 25th ARMY is at Djambi for the final battle on Sumatra. Attack will be launched in 48H with massive bomber support.

PERTH RAID: KB1 and KB3.
KB1 launched a port strike on Perth. Enemy had very few fighters on CAP (about five P-40 Warhawk shot down).
Enemy losses:
xAK Koomilya, Bomb hits 2, on fire, heavy damage
xAK Aroona, Bomb hits 1, heavy fires, heavy damage
AGP Tydeman, Bomb hits 2, heavy fires, heavy damage
xAK Bhima, Bomb hits 1
xAK Aldinga, Bomb hits 1, on fire
xAK Momba, Bomb hits 1, on fire
xAK Risaldar, Bomb hits 2, heavy fires, heavy damage
xAP Demosthenes, Bomb hits 1
xAK Autolycus, Bomb hits 1, on fire
xAK Moonta, Bomb hits 1, heavy fires
xAK Mangola, Bomb hits 1, on fire
xAP Nurmahal, Bomb hits 1

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and east of Palmyra island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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: Kweilin airfield was bombed.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines east of Palmyra island.

Current op:
14th ARMY operation III (HAWAII): all units will arrive Xmas island in 24-48H.
CA Aoba and two escorting PBs were sunk by divebombers from Johnston island (shikata ga nai). This is the sixth CA lost.

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



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units spotted at Milne Bay (SE Port Moresby).

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
Radio transmissions detected at Amchitka Island (158,52).
Radio transmissions detected at Adak Island (162,52).

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

18 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
More than 150 enemy fighters and bombers seem to have relocated away from eastern India(!). No enemy air attacks against 16th Army.
ALERT seven enemy ground units located two hexes NE of Dacca in open terrain.

Current op:
INMON SAKUSEN:
Combined Fleet: fleet assets cover area SW Chittagong and SW Rangoon. Two british DDs sunk near Ramree Island:

Japanese Ships
CL Kinu
DD Fumizuki
DD Kikuzuki
DD Nagatsuki
DD Mikazuki, Shell hits 1

Enemy Ships
DD Pakenham, Shell hits 1
DD Paladin, Shell hits 7, Torpedo hits 1, and is sunk

Japanese Ships
CA Haguro
CA Nachi
DD Amatsukaze
DD Hagikaze
DD Shirayuki, Shell hits 2, on fire

Enemy Ships
DD Pakenham, Shell hits 14, and is sunk

16th ARMY: in forward defensive positions with secure LOC to Chittangong.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) is to capture Akyab. The third shock attack:

Attacking force 5579 troops, 67 guns, 90 vehicles, Assault Value = 198, Japanese adjusted assault: 174, shock(+)
Defending force 2642 troops, 18 guns, 44 vehicles, Assault Value = 77, Allied adjusted defense: 101, terrain(+), disruption(-), experience(-)
Japanese assault odds: 1 to 1 (fort level 0)

Japanese ground losses:
130 casualties reported
Squads: 0 destroyed, 2 disabled
Non Combat: 0 destroyed, 3 disabled
Engineers: 0 destroyed, 14 disabled

Allied ground losses:
161 casualties reported
Squads: 1 destroyed, 23 disabled
Non Combat: 3 destroyed, 5 disabled
Engineers: 1 destroyed, 0 disabled
Guns lost 2 (2 destroyed, 0 disabled)

Assaulting units:
2nd Engineer Regiment
24th Infantry Regiment
7th Tank Regiment
2nd Field Artillery Regiment

Defending units:
46th Indian Brigade
23rd Indian Mountain Gun Regiment
RAF 221 Group Wing /1

15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: NIL.
3rd Air Division and 21st Air Flotilla is protecting Chittagong (AAA regiment will disembark during next 24H).

TORA SAKUSEN-2: 25th ARMY is at Djambi for the final battle on Sumatra. Attack will be launched in 24H with massive bomber support.

PERTH RAID: KB1 and KB3.
KB1 launched another port strike on Perth.
Enemy losses:
xAK Aldinga, Bomb hits 2, heavy fires, heavy damage
xAK Aroona, Bomb hits 1, and is sunk
xAK Momba, Bomb hits 2, and is sunk
xAK Moonta, Bomb hits 2, heavy fires, heavy damage
AGP Tydeman, Bomb hits 2, and is sunk
xAK Autolycus, Bomb hits 3, heavy fires, heavy damage
xAK Risaldar, Bomb hits 1, and is sunk

KB3 sank:

Day Time Surface Combat, near Albany at 49,152, Range 20,000 Yards:
Japanese Ship: DD Murasame attacked:
xAK Bhima, Shell hits 15, heavy fires, heavy damage
xAP Nurmahal, Shell hits 9, heavy fires, heavy damage
xAK Lowana, Shell hits 11, and is sunk

Japanese aircraft
B5N2 Kate x 20

Allied Ships
xAK Mangola, Bomb hits 4, and is sunk
xAP Demosthenes, Bomb hits 9, and is sunk

ASW and CONVOY COMMAND: No submarine activity reported in area Singapore-Tokyo. Submarines are concentrated W and SW off Rangoon and east of Palmyra island (central Pacific).

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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. During next 24h, fighter sweeps will be conducted.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines east of Palmyra island.

Current op:
14th ARMY operation III (HAWAII): all units will arrive Xmas island in 24H.

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



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units spotted at Milne Bay (SE Port Moresby).

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
Convoy movements: Karafuto-Hokkaido-Honshu.

Planned op:
NIL.

[PT boat skipper]

19 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Bombers discovered at airfield NV Calcutta. 30+ B-17 attacked 16th Army tank units NE Dacca.
ALERT ten enemy ground units located two hexes NE of Dacca in open terrain. At least some are moving toward the SE.

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 Chittangong.
Mobile units (1st and 2nd Tank Divisions) are located E and NE of Dacca.
2nd Division (-) captured Akyab:

Enemy ground losses:
2648 casualties reported
Squads: 99 destroyed, 0 disabled
Non Combat: 151 destroyed, 0 disabled
Engineers: 17 destroyed, 0 disabled
Guns lost 22 (22 destroyed, 0 disabled)
Vehicles lost 48 (48 destroyed, 0 disabled)

Destroyed units:
46th Indian Brigade
23rd Indian Mountain Gun Regiment
RAF 221 Group Wing /1

15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).
5th Air Division: warning orders given regarding air interdiction of enemy units NE Dacca.
3rd Air Division and 21st Air Flotilla is protecting Chittagong. Air raid will be launched against discovered enemy units NE Dacca.

COMPLETED! TORA SAKUSEN-2: 25th ARMY was victorious at Djambi in the final battle on Sumatra. 65% of oil facilities at Djambi are undamaged.

Japanese Deliberate attack
Attacking force 46844 troops, 713 guns, 281 vehicles, Assault Value = 1479, Japanese adjusted assault: 1362
Defending force 16861 troops, 339 guns, 177 vehicles, Assault Value = 516, Allied adjusted defense: 53
Japanese engineers reduce fortifications to 2
Japanese assault odds: 25 to 1 (fort level 2)

Assaulting units of 25th ARMY
21st Infantry Regiment
113th Infantry Regiment
148th Infantry Regiment
12th Engineer Regiment
56th Infantry Regiment
114th Infantry Regiment
11th Infantry Regiment
Imperial Guards Division
15th Ind. Engineer Regiment
55th Infantry Regiment
41st Infantry Regiment
20th Ind. Mtn Gun Battalion
10th Ind. Mountain Gun Regiment
25th Army
1st Hvy.Artillery Regiment
2nd Ind.Hvy.Art. Battalion
3rd Medium Field Artillery Regiment
23rd Medium Field Artillery Regiment
3rd Mortar Battalion
3rd Ind. Mountain Gun Regiment
5th Mortar Battalion
18th Medium Field Artillery Regiment
Tonei Hvy Gun Regiment
3rd Ind.Hvy.Art. Battalion
18th Mountain Gun Regiment
2nd Mortar Battalion
5th Field Artillery Regiment
14th Ind.Art.Mortar Battalion

Enemy ground losses:
19202 casualties reported
Squads: 538 destroyed, 0 disabled
Non Combat: 1386 destroyed, 0 disabled
Engineers: 186 destroyed, 0 disabled
Guns lost 282 (282 destroyed, 0 disabled)
Vehicles lost 177 (177 destroyed, 0 disabled)

Units destroyed 14:
18th British Division
11th Indian Division
109th RAF Base Force
24th NZ Pioneer Coy
5/14th Punjab Battalion
2nd Loyal Battalion
1st KNIL Landstorm Battalion
1st Indian Heavy AA Regiment
107th RN Base Force
1st ISF Base Force
ABDA
6th Heavy AA Regiment
35th Light AA Regiment
108th RN Base Force

Planned op:
25th ARMY operation II: INMON SAKUSEN (support 16th ARMY).
17th ARMY operation I: INMON SAKUSEN (support 16th ARMY).
16th ARMY operation II: Landing at Port Blair (postponed)
25th ARMY operation III: SANGOKUICHI SAKUSEN.



CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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: Fighter sweeps met no enemy fighters in the air.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines east of Palmyra island.
ALERT2 enemy TF (CL, ADP?) 14 hexes NE Xmas island.

Current op:
14th ARMY operation III (HAWAII): KB2 will replenish ammunition at Xmas island in 24H.

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



SOUTHEAST AREA FLEET (New Guinea - South Pacific)

Enemy sitrep:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units at Milne Bay (SE Port Moresby).

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

Planned op:
17th ARMY operation II (New Caledonia)(postponed)
14th ARMY operation IV (Port Moresby)(postponed)



5th FLEET (North Pacific)

Enemy sitrep:
NIL.

Current op:
NIL.

Planned op:
Some local 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 east of Palmyra island (central Pacific).

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

19 May 1942

A week long general staff conference in Tokyo at GHQ regarding current and furture operations will be finished shortly.

Minutes, maps and sitreps will be posted below.

Tentative outline of the conference report is as follows:

1. GENERAL SITUATION
a) map (SITREP)
b) status of OPLAN (Lines of Operations and Decisive Points)
c) new OPLAN (Lines of Operations and Decisive Points)
d) naval and air production
e) fuel and oil situation

2. INMON SAKUSEN
a) map (SITREP)
b) own and enemy OOB

3. SANGOKUICHI SAKUSEN
a) map (SITREP)

4. KATSUIRO SAKUSEN
a) map (SITREP)

[PT boat skipper]

19 May 1942

1. GENERAL SITUATION
a) map (SITREP)

Attachment: SITMAP (below)

Victory points as of today:
JAPAN = 23,749
ALLIES = 10,212

Army losses:
JAPAN = 1,708
ALLIES = 9,658

Aircraft losses:
JAPAN = 1,648
ALLIES = 2,041

Ship losses:
JAPAN = 2,160
ALLIES = 4,613

Detailed ship losses:
JAPAN: 1 CVL (Zuiho), 6 CA (Takao, Myoko, Suzuya, Kumano, Aoba and Kako), 9 CL and 22 DD.
ALLIES: 2 CV (Lexington and Enterprise), 10 BB (8xPH and PoW and BC Repulse), 5 CA, 20 CL (incl Boise and Honolulu), 58+ DD.


JAPAN VICTORIES:
19 May 1942: capture of Sumatra (Palembang-Djambi) (1)
10 April 1942: landing in Eastern India (Chittagong) (2)
07 April 1942: capture of Palmyra and Xmas island (3)
28 February 1942: occupation of Baker island (4)
03 February 1942: capture of Luzon/Clark Field (5)
16 january 1942: sinking of CV Enterprise and CV Lexington (6)
04 February 1942: capture of Batavia/Java (7)
18 January 1942: capture of Singapore (8)

NOTE:
(4) no enemy resistance
(6) KB1 (CV Akagi and Kaga) were damaged = 1,5 month delay in operations - see enemy victories below:


ENEMY VICTORIES:
25 March 1942: invasion defence at Cocos island (1)
12 May 1942: invasion defence at Johnston island (2)
19 May 1942: build up at Canton island (3)
19 May 1942: build up at Port Blair (4)
19 May 1942: build up at Amchitika (5)
12 March to 08 April 1942: defensive operations in China (6)

NOTE:
1 and 2 are real failures as they are neccessary for fulfilling OPLAN. Therefore, a new and revised OPLAN will be vaild from 20 May 1942, taking into considerations the victories detailed above.


Above data will be further explained in section b) status of OPLAN.
Data will also support the new OPLAN. See section c) new OPLAN.

[PT boat skipper]

19 May 1942

1. GENERAL SITUATION
b) status of OPLAN (Lines of Operations and Decisive Points)

There are four lines of operations:
1. Cut SLOC to Australia: East and West.
2. Conquer the border area India-Burma by landings IOT delay an offensive toward Burma and to cut supply route to China.
3. Conquer, or, deny the use of Pearl Harbor.
4. Conquer the SRA (incl Palembang).

Then there are 11 Decisive Points (DP):
1. Singapore
2. Johnston Island
3. Sumatra (oil and fuel producing centers: Palembang-Djambi-Medan)
4. Java
5. Xmas island (Indian Ocean)
6. Horn island
7. Xmas island (Pacific)
8. Nomea
9. Western Burma
11. KB intact
13. Hawaii


This is the status as of 19 may 1942:

Cut SLOC to Australia: East and West. AMBER
5. Xmas island (Indian Ocean) AMBER
6. Horn island RED
7. Xmas island (Pacific) GREEN
8. Nomea RED
11. KB intact GREEN

NOTE:
5. limited sucess due to enemy holding Cocos island
6 and 8 are failures b/c KB1 was not available for 1,5 months after carrier battle in January 1942.
11 KB is as of this date about 100% operational (all CV can conduct flight operations).


Conquer the border area India-Burma by landings IOT delay an offensive toward Burma and to cut supply route to China. AMBER
1. Singapore GREEN
9. Western Burma GREEN

NOTE:
9. The landing at Chittagong was a major success causing the enemy to divert massive reinforcements to Eastern India. However, there is a need to include Ledo airfield as a DP (currently RED). Therefore, this Line of Operation is considered a limited success as of today.


Conquer, or, deny the use of Pearl Harbor. RED
2. Johnston Island RED
7. Xmas island (Pacific) GREEN
11. KB intact GREEN
13. Hawaii RED

NOTE:
2. Enemy success in holding Johnston island is of critical significance.


Conquer the SRA (incl Palembang). AMBER
1. Singapore GREEN
3. Sumatra (oil and fuel producing centers: Palembang-Djambi-Medan) AMBER
4. Java GREEN
5. Xmas island (Indian Ocean) AMBER

NOTE:
3. Limited success due to the total destruction of Palembang's oil and fuel producing facilities.


CONCLUSION:
This OPLAN has been more successfull in the Southern Army area of operations and less successfull in the 4th Fleet area.
The new OPLAN will build upon the success already achieved. The enemy has for example taken significant losses in ground troops compared to aircraft and ships (the later is something that Japan cannot replace easily and will therefore lose a war of attrition).
The new OPLAN will also take into account the present lack of fuel for navy operations.
Therefore, more focus will be on ARMY operations rather than on NAVY operations.
See section c) new OPLAN for details of future operations.

[PT boat skipper]

19 May 1942

1. GENERAL SITUATION
c) new OPLAN (Lines of Operations and Decisive Points)

The new OPLAN, effective from 20 May, has three Lines of Operations and 13 DPs:



1) Cut SLOC to Australia: West and East
IOT delay enemy US naval offensive actions from Australia
KATSUIRO SAKUSEN

DP 1 = Conquer, or deny the use of Cocos island: AMBER
DP 2 = Conquer, or deny the use of Torres strait: RED
DP 3 = Conquer New Caledonia: RED
DP 9 = Defend Palmyra and Xmas islands: GREEN
DP 10 = INTACT KB with no limitations in fuel: AMBER



2) Conquer the border area India-Burma
IOT delay an offensive toward Burma and cut supply route to China
INMON SAKUSEN

DP 4 = Defend Rangoon: GREEN
DP 5 = Conquer Mytikynia: RED
DP 6 = Conquer Ledo: RED
DP 7 = DEFEAT enemy armies in eastern India: RED
DP 8 = Conquer, or deny the use of Port Blair: RED



3) Conquer China
IOT Win
SANGOKUICHI SAKUSEN

DP 11 = Conquer all oil-producing facilities: RED
DP 12 = Conquer route Hanoi - Hankow: RED
DP 13 = Conquer, or deny the use of all air bases: RED

[PT boat skipper]

19 May 1942

1. GENERAL SITUATION
d) naval and air production

Naval shipyard production level: 1,915
Merchant shipyard production level: 772

Accelerated ships:
CV Hiyo (29 July 1942)
CV Taiho (26 Dec 1943)
CV Unryu (28 May 1944)
CVL Ibuki (8 feb 1945)
CL Oyodo (24 Oct 1942)
7 TK Type 1-TL

To be accelerated shortly:
CV Shinano (20 Nov 1944)
I-56 (09 Jun 1944) (first radar-equiped submarine)

Note: BB YAMATO entered service 19 May 1942.



Monthly aircraft production:

Aircraft assembly: 741 + 241rd
Aircraft engines: 1054 + 193rd

Ki-43Ic Oscar: 160
A6M2 Zero: 128

Ki-48-IIa Lily: 64
Other bombers: approx 32 per type (Betty, Nell, Sally, Helen, Kate and Val)

Transports: approx 6-9 per type

[PT boat skipper]

19 May 1942

1. GENERAL SITUATION
e) fuel and oil situation


Production
Oil production: 1,743
Oil storage: 2,497,279

Fuel production: 2,239 (20,000)
Fuel storage: 2,431,840

Repair works are in progress regarding Palembang refinery on Sumatra, as well as Miri refinery on northern Borneo.


Convoys
Oil are shipped from Singapore to Japan.
Fuel are shipped from eastern Borneo to Truk (SE and 4th Fleets).


The map below show the importance of facilities in Burma at present.
The availability of fuel was a major factor for devising future operations (ref: new OPLAN) and
therefore concentrating forces near Burma.

[PT boat skipper]

19 May 1942

2. INMON SAKUSEN
a) map (SITREP)

Current situation.

1) It is likely that the enemy will launch an attack with up to ten units including the 7th Australian Division toward Dacca/Comilla. This will be countered by the 21st BRIGADE and a Brigade force from the 2nd DIVISION (from Akyab). 3rd and 5th AIR DIVISIONS will begin to attack advancing enemy ground units with all available bombers (250+ in about five days).


Mid-term situation.

2) In two weeks, the entire 25th ARMY will disembark at Chittagong and then attack towards the NE.

[PT boat skipper]

19 May 1942

2. INMON SAKUSEN
b) own and enemy OOB

The order of battle for INMON SAKUSEN is presented below.

For the enemy OOB, please see the previous post above.


Operational HQ

SOUTHERN ARMY (GEN Terauchi, Hisaichi)(at Rangoon)
4th DIVISION, 21st DIVISION and 21st BRIGADE


IJA

15th ARMY (LGEN Iida, Shojiro)(in Burma)
33rd DIVISION and 55th DIVISION

16th ARMY (LGEN Imamura, Hitoshi)
9th DIVISION, 19th DIVISION, 38th DIVISION, 2nd DIVISION, 1st TANK DVISION (-) and 2nd TANK DIVISION (-)

17th ARMY (LGEN Hyakutuke, Seikichi)(initially SOUTHERN ARMY reserve at Singapore)
10th DIVISION, 52nd DIVISION and 53rd DIVISION

25th ARMY (LGEN Yamashita, Tomoyuki)
IMPERIAL GUARD DIVISION (IGD), 5th DIVISION, 18th DIVISION and 56th DIVISION


IJAAF

3rd AIR DIVISION (LGEN Sugawara, Michio)(at Chittagong)
Fighters: 154 Ki-43-Ic: 1st SENTAI, 11th SENTAI, 59th SENTAI and 64th SENTAI
Medium bombers: 112 Ki-21-IIa: 12th SENTAI, 60th SENAI, 62nd SENTAI and 98th SENTAI
Medium bombers: 31 Ki-48 IIa: 90th SENTAI
Medium bombers: 27 Ki-48Ib: 75th SENTAI
Light bombers: 31 Ki-30: 31st SENTAI

5th AIR DIVISION (LGEN Ohara, Kazuaki)(at Magwe)
Fighters: 75 Ki-43-Ic: 24th SENTAI and 50th SENTAI
Fighters: 9 Ki-44: 47th Chutai
Medium bombers: 30 Ki-21-IIa: 14th SENTAI
Medium bombers: 56 Ki-48Ib: 8th and 16th SENTAI

NOTE: In addition, there are about 100 transport aircraft and two elite parachute battalions.


IJN

COMBINED FLEET (ADM Yamamoto Isoroku)(at Singapore)
Naval units below are planned to be available for COMBINED FLEET operations in support of INMON SAKUSEN from 27th MAY until 15th JUNE:

3 CV (Akagi, Kaga and Jyunyo),
2 CVL,
2 CVE,
7 BB (Yamato, Nagato, Mutsu, Kongo, Haruna, Yamashiro and Fuso),
8 CA,
4 CL,
30+ DD and
10+ SS

NOTE: some units above (2 BB, 2 CA, 1 CL and 10 DD) will be assigned to 2nd FLEET at Chittagong.


IJNAF

21st AIR FLOTILLA (RADM Toda, Takeo)(at Rangoon)
Fighters: 76 A6M2: 3rd Ku S-1 and Kanoya Ku-S-1
Medium bombers: 41 G3M2 (1st Ku K-1)
Dive-bombers: 20 D3A1 (Bako Det.)

NOTE: naval air reinforcements can be provided from 22nd AIR FLOTILLA (North Sumatra) and
11th AIR FLEET (Xmas island, west of Java).

[PT boat skipper]

19 May 1942

3. SANGOKUICHI SAKUSEN
a) map (SITREP)

The following changes have been made in the OPLAN:

- The start of this operation has been moved from JUNE to AUGUST.
- 16th ARMY will be assigned to CHINA EXP ARMY instead of 25th ARMY as originally planned.

This operation will be decisive regarding the outcome of the war.

[PT boat skipper]

19 May 1942

4. KATSUIRO SAKUSEN
a) map (SITREP)

This is a new operation. It cover most of the first line of operations in the New OPLAN:

1) Cut SLOC to Australia: West and East
IOT delay enemy US naval offensive actions from Australia
KATSUIRO SAKUSEN

DP 1 = Conquer, or deny the use of Cocos island: AMBER
DP 2 = Conquer, or deny the use of Torres strait: RED
DP 3 = Conquer New Caledonia: RED
DP 9 = Defend Palmyra and Xmas islands: GREEN
DP 10 = INTACT KB with no limitations in fuel: AMBER


KATSUIRO SAKUSEN consists of several phases (from May to August):

1) Establishing a new atoll base for long-distance naval air search and
securing the existing base on Baker island.

2) Refitting and repairing CV (KB2) in Japan.

3) Invading New Caledonia (14th ARMY).

The map below show the extent of planned naval air search network.
Possible locations of enemy aircraft carriers are also indicated on the map.

[PT boat skipper]

20 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Air battle over hex NE Dacca (over own forward tank units). See below.
ALERT! enemy offensive toward Comilla/Dacca in progress.

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 (1st and 2nd Tank Divisions) are withdrawing toward Dacca/Comilla.
25th ARMY: all units are marching toward Palembang, where they will embark transports for Chittagong.
17th ARMY: 10th Division will disembark at Singapore during next 24H and will constitute Southern Army reserve force.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

5th Air Division: interdiction of enemy units NE Dacca will commence in 24H.
3rd Air Division: five bomber sentai will transfer from Singapore toward Burma (ETA 72H).

21st Air Flotilla: defensive air operation (LRCAP) over mobile units NE Dacca:
Own losses: 12+3WO A6M2 Zeros (5 pilots KIA)
Enemy losses: 30+ aircraft:
Fulmar II: 14 destroyed
Kittyhawk I: 4 destroyed
Blenheim I: 2 destroyed, 1 damaged
Blenheim IV: 6 destroyed, 9 damaged
B-26 Marauder: 6 damaged

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


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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: no air operation due to bad weather.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT enemy single DD destroyed one PB and one xAK south of Tarawa.

Current op:
KATSUIRO SAKUSEN: first phase: embarkation at Xmas island will finish in 24H.

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:
Air and naval base construction at Nomea.
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units at Milne Bay (SE 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).

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

21 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Air battle over Chittagong.
ALERT! enemy offensive in progress. See below.

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 (1st and 2nd Tank Divisions) are withdrawing toward Dacca/Comilla. One tank regiment delayed enemy offensive. One hex behind the enemy tank units is the 7th Australian Division.

Ground combat at 57,37 (near Dacca)- Allied Deliberate attack
Attacking force 3184 troops, 39 guns, 294 vehicles, Assault Value = 495, Allied adjusted assault: 124
Defending force 808 troops, 0 guns, 143 vehicles, Assault Value = 69 (10th Tank regiment), Japanese adjusted defense: 11, disruption(-)

Allied assault odds: 11 to 1

Japanese ground losses:
Vehicles lost 86 (46 destroyed, 40 disabled)
Units retreated 1

Allied ground losses:
141 casualties reported
Squads: 2 destroyed, 13 disabled
Non Combat: 1 destroyed, 2 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 21 (1 destroyed, 20 disabled)

Assaulting units:
75th IAC Regiment
42nd Cavalry Regiment
150th RAC Regiment
254th Armoured Brigade
50th Tank Brigade
255th Armoured Brigade
45th Recce Regiment

25th ARMY: all units are marching toward Palembang, where they will embark transports for Chittagong.
17th ARMY: 10th Division has disembarked at Singapore.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

5th Air Division: interdiction of enemy units NE Dacca:
Own losses:
Ki-43-Ic Oscar: 3 lost
Enemy losses:
P-40E Warhawk: 8 destroyed
7th AUS DIV and 50th Tank brigade were bombed.

3rd Air Division: four bomber sentai will transfer from Singapore toward Burma (ETA 48H). One bomber sentai will support 5th Air Division in 24H.

21st Air Flotilla: defensive air operation over Chittagong:
Own losses:
A6M2 Zeros: 7 lost (3 pilots KIA)
Enemy losses:
Hurricane IIb Trop: 8+ destroyed
P-38E Lightning: 6 destroyed (vs only one Zero lost)

32 B-17 Bombers then bomb Chittagong, damage is minimal. 10+ bombers are damaged by AAA.

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


CHINA EXPEDITIONARY ARMY

Enemy sitrep:
NIL.

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 severely damaged.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines around Xmas island.

Current op:
KATSUIRO SAKUSEN: first phase: operation will begin in 24H.

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:
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units at Milne Bay (SE 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).

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

22 May 1942



SOUTHERN ARMY (Burma-Java-Ambon)

Enemy sitrep:
Radio intercept indicate furious allied air commanders regarding yesterdays air battle over Chittagong.
ALERT! enemy offensive in progress in NE India. Tank units are now heading west. Likely target is Dacca. See attached map below.

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 (1st and 2nd Tank Divisions) are withdrawing toward Dacca/Comilla.
25th ARMY: all units are marching toward Palembang, where they will embark transports for Chittagong.
17th ARMY: 10th Division is at Singapore. 52nd and 53rd at Nagoya.
15th Army is to invest and then capture Katka IOT establish a forward major airfield (5th Air Division).

5th Air Division: air interdiction of enemy tank units in open terrain begins east of Dacca. No enemy fighters or AAA-units:

Japanese aircraft (aircraft numbers will double in 24H)
Ki-21-IIa Sally x 28
Ki-30 Ann x 25
Ki-43-Ic Oscar x 51
Ki-48-Ib Lily x 27
Ki-48-IIa Lily x 19

Enemy ground losses:
127 casualties reported
Squads: 0 destroyed, 6 disabled
Non Combat: 2 destroyed, 37 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 63 (6 destroyed, 57 disabled)

3rd Air Division: will take over air to ground operations from 5th Air Division in 24H. Supports defensive air operations over Chittagong.
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:
NIL.

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: bad weather.

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



4th FLEET (Central Pacific)

Enemy sitrep:
ALERT many submarines around Xmas island.

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 (10 ships) at Merauke (NV Horns island/Torres strait). Most likely offloading supplies/air base units.
Port Moresby: 40 fighters, 25 000 troops.
Horn island, 20 fighters, 20 bombers, about 5 000 troops.
Two ground units at Milne Bay (SE 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).

Current ASW op and convoy movements:
GREEN: Singapore to Japan. (75,000 tonnes of oil delivered today)
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.




1) Instead of turning SE/S to cut of 16th ARMY, enemy is heading West IOT attack our tank units in open terrain and then presumably to assault Dacca. However, our tank units will reach Dacca in 24-48H. One infantry brigade and one regiment will be able to reinforce Dacca in about four days.