Knowing what I do now, yes, I would volunteer to be a pilot for whatever aircraft they determined I would be best suited for. I would not expect to qualify though. If I did qualify I would not expect to survive the war, or be a hero, and I would be just fine with that.
The motivation is from the "knowing" part. If those brave men had not gone to battle, and done their best, we would not now live in a free society. I would rather die trying to get us there than live without freedom. Period. No gray area.
I would also use all my knowledge to win, no rules, no quarter given, including running like a girl when at a disadvantage to save myself and my aircraft to allow the opportunity to kill more of them later, with an advantage, without remorse.
Finally, with all that bravo, I am guessing I would piss my pants at the first sighting of an enemy aircraft engaging me.