"has anybody ever heard of the Winter War? It was 1940, between Finland and the USSR. The tactics the Finns used were simply amazing, and it helped them keep their sovereignty. The Soviets had a huge advantage material-wise, but the Finns used the landscape to their advantage. They mined the mountain passes, so that, when the Soviets sent a column of tanks through, the lead tank would be destroyed. The remaining tanks were nearly helpless, since it was difficult to coordinate a column of tanks going backward for miles (the passes were too narrow to turn around). Meanwhile, the Finns, with their skis and submachine guns, killed the suprised infantry riding on the tanks, then destroyed the tanks at their leisure. They destroyed entire columns this way."
The Winter War makes me proud to be a Scandinavian. The Finns, as this quote says, put up a brilliant defense against the biggest military in the world and retained their sovereignty.