▁the ▁V äh ä - Ah ven k os ki ▁village , ▁and ▁then ▁transport ed ▁to ▁various ▁White ▁prison ▁cam ps ▁in ▁Southern ▁Finland . ▁The ▁following ▁week , ▁the ▁Wh ites ▁executed ▁nearly ▁ 3 0 0 ▁Red s ▁in ▁K ymi ▁valley . ▁ ▁After math ▁▁ ▁According ▁to ▁a ▁list ▁of ▁Germ ans ▁who ▁were ▁killed ▁in ▁action ▁during ▁the ▁war , ▁at ▁least ▁ 1 3 ▁Germ ans ▁died ▁during ▁the ▁attack ▁of ▁ 2 2 ▁and ▁ 2 3 A pril . ▁According ▁to ▁a ▁Finn ish ▁cas ual ty ▁database , ▁at ▁least ▁ 1 3 ▁Red s ▁died ▁during ▁the ▁battle ▁within ▁the ▁Py ht ä ä ▁municipality . ▁Seven ▁Germ ans ▁were ▁buried ▁in ▁Ah ven k os ki ▁C emetery , ▁as ▁well ▁as ▁an ▁unknown ▁number ▁of ▁Red s . ▁A ▁mem orial ▁on ▁the ▁Red ▁mass ▁grave ▁was ▁ere cted ▁in ▁ 1 9 4 6 . ▁In ▁September ▁ 2 0 1 3 , ▁a ▁mem orial ▁to ▁the ▁end ▁of ▁the ▁Civil ▁War ▁was ▁un ve iled ▁at ▁the ▁site ▁where ▁the ▁last ▁Red s ▁surrender ed . ▁The ▁Battle ▁of ▁Ah ven k os ki ▁was ▁the ▁last ▁action ▁of ▁the ▁Civil ▁War , ▁but ▁the ▁White ▁Army ▁Commander - in - Ch ief ▁C . ▁G . ▁E . ▁M anner heim ▁did ▁not ▁declare ▁the ▁war ▁over ▁until ▁ 1 6 May , ▁when ▁the ▁Rus si ans ▁had ▁left ▁Fort ▁In o ▁near ▁Pet ro