During the Winter War the Soviet Red Army invaded Finland. The Soviets did so because they wanted a part of the Finnish territory. The battle did not go well for the Soviets at first, as the Finns inflicted heavy loses on the Red Army, employing hit and run tactics. As the spring came the Soviets reorganized their army and finally managed to defeat the Finns. The battle ended with the Treaty of Moscow in which the Soviet leaders managed to gain a larger proportion of Finnish territory than they wanted before the conflict started.