maybe my strategy is flawed, but I do an all out attack on every allied ship:
1 sub versus american transport
1 fighter from wetsern europe versus brit trans
one battle ship and one trans versus brit battleship
3 fighters, one bomber, one trans and one sub versus brit and russian fleet in north sea
last fighter from ukraine flies to egypt and attacks with one tank and one infantry.
With a fighter in libya, and a fighter in western europe, i can attack any transport that might of survived trying to reclaim africa.
this has worked for me…