Commemoration Day of Fallen Soldiers
Commemoration Day of Fallen Soldiers (Finnish: kaatuneiden muistopäivä) is the commemoration day observed in Finland on the third Sunday of May for the soldiers killed in the Winter War and Finnish Civil War 1918] After 1940 it was also the day of commemoration of the soldiers killed in the Continuation War and the Lapland War. There were also members of Lotta Svärd, who also were victims of war serving in uniforms on the front. Nowadays the day also commemorates Finnish soldiers killed in United Nations peacekeeping missions.
Source : Wikipedia
In Russia founded relics of 38 Finnish soldiers were buried at Lappeenranta war cemetary.