The Holocaust in Croatia including Serbian Genocide timeline By Hyper-xMonkey Sep 1, 1939 World War II begins Period: Sep 1, 1939 to Sep 2, 1937 Timeline Apr 6, 1941 The German army invades Yugoslavia and Greece 1942 Ustasa (Croatian fascist) guards force prisoner into a pit to be shot. Jasenovac concentration camp. Yugoslavia 1943 —Croatian authorities transferred about 7,000 Jews into German custody. 1943 Jews from Macedonia board deportation trains Jun 23, 1944 When Romania withdrew from the Axis and joined the Allies 1945 German and Croat troops continued to fight in northwestern Yugoslavia until the end 1945 In April 1945, Croat authorities murdered thousands of people at Jasenovac Apr 30, 1945 The dam of death 1948 After World War II, the Yugoslav Union was reestablished under Communist rule