[Ryzorian]

The US has nearly a third of the world's natural resources and a large population, plus 2 oceans between it and everyone else. Two oceans that they were able to transport 15 million troops across in 4 years, that's a major thing in and of itself.

We also fight with a type of scorched earth policy like Russia does, only instead of burning ourselves out of house and home, we burn our enemies out of thiers. So yes, the US had the ability and the will at that time, to defeat both Germany and Japan alone. It would have taken longer and cost more American lives, but it was doable.

I won't deny the Russians were both brave and tenacious, those are true. They also tied up several German divisions, that's also true. However, we have to remember that Germany wasn't run by it's generals, it was run by one guy. Russia was strongly aided by the fact Hitler wouldn't listen to his generals, if he had, it would have been far different. Russia was both technologically behind Germany and had fewer resources to play with. ( Siberia, while resource rich, was difficult to get to then)

Case in point, Custer would have won Little Bighorn if he just waited for the 3,000 infantry that were a day away. He didn't and the rest is history.

As to Britain, it was on it's last legs, on the verge of defeat, Churchill managed to tweek Hitler into stopping his military attacks and intiate the "Bomb London" fiasco during the Battle of Britain. That turned the tide in air power and Germany was never able to recover. Again, this was due to Hitler being a idiot.

The US historically, has a tendency to loose interest in things over seas, it's why our wars are generally stupid things like Vietnam. Kinda like Godzilla, not sure if it wants to do what it's doing or not, so we end up doing things haphazzardly. Even then, there isn't a country that we have sent troops to who weren't deeply effected by it. Look at Somlia, most Americans don't even remember haveing troops there, better believe the Somlalis do. Again like Gozillia, smash the place up a little, loose interest or forget why we there, and leave. Almost like a force of nature.

However, if the US is really focused and really angery enough, they can completely destroy countries. I don't mean little ones like Afganistan either, I mean major players like a Russia or Germany. Japan's generals, those who had been to the US. Didn't want to attack the US, knowing what it was capable of if motivated enough. Guess what Pearl Harbor did?