Germany. Though a little less now that Italy’s stealing what should rightfully be Rommel’s drive in North Africa.
Germany requires the most skill, the most tact to play successfully. If you’re squeamish, don’t play Germany. And if you’re Germany, you’re the center of attention. Every nation on earth is trying to dogpile you and you have to fight fanatically to repel their attacks. While also having the intestinal fortitude to surge forward elsewhere.
Where else in history have you seen that? During the Seven Years War, Frederick the Great, the greatest military leader of all time, was beset on all sides by Holy Roman, French, Russian, Swedish, Saxon, and Austrian armies. He had no continental Allies. In every battle Frederick fought in he was grossly outnumbered. Yet he won. Often brilliantly.
In Axis and Allies, I’m Frederick the Great and I plan to restore Germany to her proper place: Ruler of Europe.