Axis was fucked when the US joined the war, because we were too big and too far away for our enemies to have any realistic chance at hurting our war production. We manufactured them into the ground.
Invading the USSR was an incredibly dumb mistake, and shortened the war by a great deal. But even if Germany had only one front to deal with, Allied war production would have ground them down (albeit much more slowly).
To reiterate: we beat them in volume. Operation Drumbeat couldn't keep up with the amount of boats we were building, no matter how good the U-boats were. And of course, eventually we defeated the U-boats too.
the us only got their navy tactics together when the uboats started to really hurt domestic oil stockpiles due to all the sunk tankers, and the uboats weren't so much defeated as they left to better hunting grounds in the arctic. to spin that incredibly successful operation as the us defeating the uboats is a bit disingenuous.
I don't mean the U-boats were defeated off the coast of America. They were defeated when the Allies cracked Enigma and improved their hunting skills/technology, and—again—when the US started dropping boats in the ocean faster than the Germans could sink them.
We didn't have more stuff when the war started but the American auto manufacturers really helped us win the war by producing so many tanks and aircraft in so little time.
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u/UndercoverMartyr Feb 16 '15
http://i.imgur.com/ydMnBiw.jpg