The Soviets invaded Finland on three fronts. The Finns put up a heroic resistance, often stopping the Soviet attack in its tracks. However, the overwhelming numeric superiority of the Soviet forces was too much for the Finns to overcome, and they eventually sued for peace. On March 12th, a peace treaty was signed that ceded the Karelian Isthmus, the city of Viipuri, and other lands to the Soviets.
