The treaty ending the Winter War forced Finland to cede 11 percent of its territory to the Soviet Union, yet the country maintained its independence and later squared off against Russia a second time during World War II. For the Soviets, meanwhile, victory came at a heavy cost. During just three months of fighting, their forces suffered over 300,000 casualties compared to around 65,000 for the Finns. The Winter War may have also carried important consequences for World War II. Among other things, the Red Army’s lackluster performance is often cited as a key factor in Adolf Hitler’s mistaken belief that his June 1941 invasion of the Soviet Union would be a success.
