Axis occupation of Greece
The occupation of Greece by the Axis powers (Greek: Η Κατοχή, romanized: I Katochi) began in April 1941 after the German invasion of Greece to assist its ally, Italy, in the Greco-Italian War had begun in October 1940. Following the Battle of Crete, Greece was occupied starting in June 1941.
Source: Wikipedia — Axis occupation of Greece (CC BY-SA 4.0)