[1][2]: 53–59 Before the Winter War (1939–1940), the Soviet Union established the main camp for Finnish POWs within the former monastery near Gryazovets in Vologda Oblast, Russia.
The NKVD expected the war to result in many POWs and planned nine camps to handle about 25,000 men.
According to the official Soviet statistics, Finland lost 2,377 men as prisoners of war, and their mortality rate was 17 percent.
[4] In the beginning of capture, executions of Finnish prisoners of war were mainly done by the Soviet partisans.
The partisans operated deep inside Finnish territory and they mainly executed their soldier and civilian POWs after a minor interrogation.