My list:
1. Germany
2. Soviet Union
3. Finland
4. Greece
5. Japan
What do you think?
Wow. 1/5 at best.
1. Germany, the most powerful country in Europe, completely wasted its tactical acumen through poor strategy and even worse industrial mobilization.
2. The Soviet Union, the second most populous country in the world and owner of by far the largest pre-war arsenal. Played the opposite game as the Germans: fighting well on a strategic and industrial level, but costing millions of lives due to poor tactical command.
3. I'll give you this one. No one could have done Marshal Mannerheim did for his country.
4. I suppose if you consider holding out against the Italians a badass feat, then you might as well put France on this list too. They did even better.
5. Yeah, the country that thought it could win a land war against China and a naval war against the United States. Quite possibly the worst leadership of any country in the war; worse than the Soviet Union by far.
Most badass country HAS to be the United Kingdom. There was no finer hour, perhaps in all of history. The British could easily have kept their empire in a negotiated peace with the Germans, but chose to sacrifice their future for the sake of mankind. They did a thankless job (as this thread clearly attests to), but in my mind, they were the greatest heroes.
Please, get your heads out of the "heroics" of Michael Wittmann, K/D ratios, Enemy at the Gates penal battalions, and kamikazes. Thank God we won the war.