
Turns before USA is in the war: Far east builds air + infantry with a few arty and AA. Canada pretty much always supplies and transports. UK builds supplies, transports and an air force. USA queues 4 carriers, everything else to research (10 points or so per turn). I tend to research ASW, CAG upgrades, higher transport, heavy fleet evasion and attack and a lot of torp attacks. After those are upgraded a few times, I then research air. I definately like to research fighter range as well. The only offensive actions I do are strat bombing in france and taking control of the med. I also hunt and kill all the uboats I can find.
Once USA is in the war: In the Pacific, I pull any ships and transports still surviving back to ports. I wait till my 6 carriers are ready and send them to PH and then sort of march forward to the home islands. In Europe, I tend to take southern italy for the surrender and bomb the heck out of france until there are few troops and then I invade at which time the AI always sends its whole army to face me. I then have to basically wait for the USSR to beat Germany. Also, once the US is in the war, I dump a ton of points into research (10-30 per turn) as I tend to run low on man power quickly. I also run out of resources about a year in once the USA is in.
So far, I'm not good enough to finish in 1945. Not sure what I'm doing wrong, but probably a lot
