In September 1939, the
Soviet Union entered World War II by first invading
Poland from the east and then
de facto occupying the Baltic states. In August 1940, the Republic of Estonia was officially annexed by the Soviet Union. During the following year, thousands of Estonians were arrested, executed, or sent to the Soviet
concentration camp system in
Russia. After war broke out between the Soviet Union and Germany on June 22, 1941, the Soviet authorities in occupied Estonia, in violation of the
international law, coerced about 30,000 Estonians into service in the retreating
Red Army. Although initially the Germans were perceived as liberators by most Estonians, it was soon realized that they were but another occupying power. However, with the Soviet atrocities fresh in mind, during the early stages of German occupation many young Estonian men volunteered for the Estonian units within the German Army to fight against the Soviet Union. In 1944, Estonia, along with Latvia, became one of only two non-German speaking countries occupied by Germany where a general conscription-mobilization was carried out by the occupational authorities. Against this background, joining the armed forces of
Finland, a kindred nation, appeared a reasonable alternative for those who wished to fight for the freedom of Estonia and against the advancing Red Army, but who for ideological reasons or historical grievances were unwilling to do it in the German uniform. During the
Estonian War of Independence, some 4,000
Finnish volunteers—including the regiment under leadership of Colonel
Martin Ekström and
Pohjan Pojat (“Sons of the North”) brigade under leadership of Colonel
Hans Kalm—had at a crucial moment helped to turn the tide of the war and rout the invading Red Army. The Estonian volunteers in the Finnish Army, to indicate a debt of honor, picked "For the freedom of Finland and the honor of Estonia" as their
motto. ==Service in the Finnish armed forces==