The Winter War. A military conflict between the Soviet union and Finland. It began with a Soviet invasion on november 1939 when Soviet infantery crossed the border on the Karelian Isthmus. About 9500 Swedish volunteer soldiers participated in the war. Here at Karelian Isthmus Finland and the village Summa. Almost all houses were destroyed and burned down by the Finnish army so that there would be no shelter for the Soviet troops if passing. Here a large house with only the brick chimneys standin