Even Zeros with their 60kg bombs can be effective in that role I have found in Downfall.
18 Apr 1943
I decided to move my "strategic" bombing force from China to Bangkok in order to have a go at Toungoo, which is the home of the evil P-38s. He has not been CAPing his bases in Burma because occasionally I Sweep over them with large numbers of Toscars which do well against the P-40s and Brit fighters. He has never used the P-38s on CAP.
Not bad results I thought
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Morning Air attack on Toungoo , at 57,50
Weather in hex: Heavy rain
Raid detected at 79 NM, estimated altitude 11,000 feet.
Estimated time to target is 22 minutes
Japanese aircraft
Ki-21-IIa Sally x 46
Ki-43-IIb Oscar x 109
Ki-49-IIa Helen x 63
Allied aircraft
no flights
Japanese aircraft losses
Ki-21-IIa Sally: 3 damaged
Ki-21-IIa Sally: 1 destroyed by flak
Ki-49-IIa Helen: 1 damaged
Allied aircraft losses
P-38G Lightning: 47 damaged
P-38G Lightning: 5 destroyed on ground
Spitfire PR.IV: 2 damaged
Beaufighter VIc: 15 damaged
Beaufighter VIc: 1 destroyed on ground
Beaufighter VIf: 7 damaged
Beaufighter VIf: 1 destroyed on ground
Airbase hits 19
Airbase supply hits 6
Runway hits 36
Aircraft Attacking:
24 x Ki-21-IIa Sally bombing from 7000 feet *
Airfield Attack: 2 x 250 kg GP Bomb
21 x Ki-21-IIa Sally bombing from 7000 feet *
Airfield Attack: 2 x 250 kg GP Bomb
29 x Ki-49-IIa Helen bombing from 7000 feet *
Airfield Attack: 2 x 250 kg GP Bomb
34 x Ki-49-IIa Helen bombing from 7000 feet *
Airfield Attack: 2 x 250 kg GP Bomb