I had a situation in my last game. I think I know the answer, but I wanted to ask just in case I’m wrong.
Japan has taken Celebes and has 1 aircraft carrier with a fighter and tac plus 1 transport in SZ 44. The US attacks this fleet with 1 submarine, 1 cruiser, 1 fighter and 1 tac. In the first round of combat, both sides get 2 hits each. Japan’s 2 hits are both with the aircraft, so with NO DD the US cannot take the sub as a casualty. Therefore, the US is forced to choose between the CA, fighter or tac for it’s two casualties. The US chooses the fighter and tac, leaving them with 1 submarine and 1 cruiser against Japan’s 1 fighter and 1 tac.
QUESTION: Can the US retreat JUST the cruiser and leave the submarine in SZ 44 to destroy the Japanese transport (since the Japanese planes can not hit the submarine). OR, if the US decides to retreat, does the sub have to retreat with the cruiser.
I think the rules say when the attacker retreats, he has to retreat ALL attacking units. If I’m right about this, then in order for the sub to kill the transport, the US would have to sacrifice the cruiser to the Japanese aircraft. Is this right?