12 April 1918 German forces assist the Whites in freeing Helsinki from Red rule.

At the start of February a regiment of the White Guard made preparations for battle in the Red capital, training in private homes in their socks, with sticks for guns and gramophones playing as to drown out any sounds that might raise suspicion. When the German forces invaded Helsinki, the Whites were ready to join them in battle.

The anti-revolutionary forces, led by Major General Rüdiger von der Golt, conquered Helsinki on 12 April 1918. The Germans and Finnish Whites who were killed in the fighting were buried in communal graves in the Old Church Park. The Reds who died were buried in Malmi cemetery. 

Helsinki prison camp

According to information published online in the War Victims of Finland 1914-1922 database on 19 May 2004, 1468 prisoners of war died in Helsinki’s prison camps. Of that number, 922 were taken to Santahamina garrison for burial, and eight were buried on Isosaari.