Ukraine

Oddly enough, when the nazis were fighting russia, everyone expected a quick swift blow to moscow to seize the city early, and take the nation.

What shocked everyone is that they instead went south, and ignored russia. Which didn't make a lot of sense at the time. But now we know it's because hitler had ordered them to reroute to some fuel refineries and oil pumps in the middle east. Basically, they had enough fuel to reach moscow, but not much else. And by that I don't mean the squad marching to moscow, I mean the entire nazis offensive. The whole country was out of oil. If they had marched to moscow, they'd be stuck in moscow, because thats all the fuel germany had.

So they rerouted south to go hijack some fuel. Which in context makes sense. But it also caused just enough of a delay that when they got to russia, the winter had come. So now they're burning fuel just to stay alive. But still stuck in russia, because WWII german tanks don't roll in snow.

Basically to preserve fuel they would have had to go straight to moscow and win early. But to get fuel they had to reroute and cause delay which burned a lot of the fuel they just stole.

Turns out, leading a massive army across land as big as russia burns a lot of fuel. Turns out it's a logistical nightmare.

Which is funny, because NOW we know russia to be less of a country, and more as a gas station cosplaying as a country.