The scenarios in Carrier Strike roughly reflect the changing 
 strengths of the US and Japan as the war progressed tilting 
 the balance of power increasingly towards the US as the game
 continues. In the campaign the Japanese should aim to destroy
 the US carriers as quickly as possible because in 1940 the US
 has only six carriers against Japan's ten.
 Using large numbers of bombers in a few attacks is more effective 
 than using a couple or three bombers at a time in wave after wave
 of attack. It takes about 50 bombers with 500lb bombs or torpedoes
 to sink an aircraft carrier - the same amount of ordnance can 
 inflict heavy damage on two carriers but if you're playing Japan 
 you're at a bit of a disadvantage because the US flak has a larger
 range. A small compensation for this is that the Japanese forces 
 have the wind behind them which means Japanese carriers don't have
 to manoeuvre into the correct position to enable the planes to 
 take off.