The Continuation War, also known as the Second Soviet-Finnish War, was a conflict fought by Finland and Nazi Germany against the Soviet Union during World War II. It began with a Finnish declaration of war and invasion on 25 June 1941 and ended on 19 September 1944 with the Moscow Armistice. The Soviet Union and Finland had previously fought the Winter War from 1939 to 1940, which ended with the Soviet failure to conquer Finland and the Moscow Peace Treaty. Numerous reasons have been proposed for the Finnish decision to invade, with regaining territory lost during the Winter War regarded as the most common. Other justifications for the conflict include Finnish President Risto Ryti's vision of a Greater Finland and Commander-in-Chief Carl Gustaf Emil Mannerheim's desire to annex East Karelia.
Lauri Allan Törni, later known as Larry Alan Thorne, was a Finnish-born soldier who fought under three flags: as a Finnish Army officer in the Winter War and the Continuation War ultimately gaining a rank of captain; as a Waffen-SS captain of the Finnish Volunteer Battalion of the Waffen-SS when he fought the Red Army on the Eastern Front in World War II; and as a United States Army Major when he served in the U.S. Army Special Forces in the Vietnam War.
Co-belligerence is the waging of a war in cooperation against a common enemy with or without a military alliance. Generally, the term is used for cases where no formal treaty of alliance exists. Likewise, allies may not become co-belligerents in a war if a casus foederis invoking the alliance has not arisen. Co-belligerents are defined in the Encyclopaedic Dictionary of International Law as "states engaged in a conflict with a common enemy, whether in alliance with each other or not".
Finland participated in the Second World War initially in a defensive war against the Soviet Union, followed by another, this time offensive, war against the Soviet Union acting in concert with Nazi Germany and then finally fighting alongside the Allies against Germany.
During World War II, the Nazi German Einsatzkommandos were a sub-group of the Einsatzgruppen – up to 3,000 men total – usually composed of 500–1,000 functionaries of the SS and Gestapo, whose mission was to exterminate Jews, Polish intellectuals, Romani, and communists in the captured territories often far behind the advancing German front. Einsatzkommandos, along with Sonderkommandos, were responsible for the systematic murder of Jews during the aftermath of Operation Barbarossa, the invasion of the Soviet Union. After the war, several commanders were tried in the Einsatzgruppen trial, convicted, and executed.
Stalag Luft III was a Luftwaffe-run prisoner-of-war (POW) camp during the Second World War, which held captured Western Allied air force personnel.
From 1941 to 1943, 1,408 Finns volunteered for service on the Eastern Front of World War II in the Waffen-SS, in units of the SS Division Wiking. Most of these volunteers served as motorized infantry in the Finnish Volunteer Battalion of the Waffen-SS. The unit was disbanded in mid-1943 as the volunteers' two-year commitment had expired and the Finnish government was unwilling to allow more men to volunteer. In 1944-1945 a company sized unit of Finnish defectors recruited to the SS continued fighting alongside Germany.
The Moscow Armistice was signed between Finland on one side and the Soviet Union and United Kingdom on the other side on 19 September 1944, ending the Continuation War. The Armistice restored the Moscow Peace Treaty of 1940, with a number of modifications.
The Finnish Defence Intelligence Agency is the combined signals (SIGINT), geospatial (GEOINT) and imagery intelligence (IMINT) agency of the Finnish Defence Forces. Operational since 2014, its responsibility is to support the defence of Finland through information gathering and analysis as an intelligence agency, organic to the Intelligence Division of Defence Command.
Soviet prisoners of war in Finland during World War II were captured in two Soviet-Finnish conflicts of that period: the Winter War and the Continuation War. The Finns took about 5,700 POWs during the Winter War, and due to the short length of the war they survived relatively well. However, during the Continuation War the Finns took 64,000 POWs, of whom almost 30 percent died.
Arno Kalervo Anthoni was a Finnish lawyer who was the director of the Finnish State Police Valpo in 1941–1944. He was openly antisemite and pro-Nazi, having close relations to the German Sicherheitspolizei. Anthoni and the Minister of Interior Toivo Horelli were responsible for the deportation of 135 German refugees, including 12 Jews, Finland handed over to the Nazis in 1941–1943.
In Finland, the far right was strongest in 1920–1940 when the Academic Karelia Society, Lapua Movement, Patriotic People's Movement (IKL) and Vientirauha operated in the country and had hundreds of thousands of members. In addition to these dominant far-right and fascist organizations, smaller Nazi parties operated as well.
Ensio Ilmari Uoti was a Finnish politician and Nazi who in the 1930s was the leader of the Finnish-Socialist Workers' Party (SSTP).
The Pro-German resistance movement in Finland was set up during the latter stages of the Second World War after the Moscow Armistice by Nazi Germany and the extreme right in Finland, who prepared for armed struggle against the expected Soviet occupation. Germany funded the activities and provided the necessary training. The project was separate from the plans drawn up by Finnish chief of staff officers in the summer of 1944 for the transition to guerrilla warfare. When there was no occupation, propaganda and smuggling hundreds of people out of Finland became the principal activity of the organization. After the defeat of Germany, the movement did not disintegrate but operated in Finland for several more years. Some members of the movement were caught, and 11 were convicted of treason in 1946.
Thoralf Kyrre was a Danish engineer who was involved in the pro-German resistance movement in Finland from 1944 to 1945.
Aarne Emil Kauhanen was a Finnish officer of the Central Detective Police (EK) and its successor, the State Police (ValPo), with special responsibility for aliens in the 1930s and 1940s. During the Continuation War, he acted as a liaison between the Finnish and Nazi German police authorities and was involved in the recruitment of the Finnish SS Battalion. Kauhanen also beat and tortured Jewish refugees during interrogations. After the war, he escaped to South America, where Kauhanen died in unclear circumstances in 1949. According to a memoir, one of his victims recognized and later shot him.
Boris V. Popper was a White Russian émigré living in Finland who was one of the so-called Leino prisoners. He later used the names Boris Berin-Bey and Batu Berin-Bey.
John Rosberg was a Finnish engineer and technical director of the Helsinki Telephone Association who was involved in far-right activities in the 1930s and 1940s.
Arvid (Arvi) Edvard Ojasti was a Finnish chief detective of the ValPo.
Kaarlo Helmer Kalas was a Finnish soldier, memoirist and spy.
