High Quality Content by WIKIPEDIA articles! The Battle of Greece (also known as Operation Marita, German: Unternehmen Marita) is the common name for the invasion and conquest of Greece by Nazi Germany in April 1941. Greece was supported by British Commonwealth forces, while the Germans` Axis allies Italy and Bulgaria played secondary roles. The Battle of Greece is usually distinguished from the Greco-Italian War fought in northwestern Greece and southern Albania from October 1940, as well as from the Battle of Crete fought in late May. These operations, along with the Invasion of Yugoslavia, comprise the Balkans Campaign of World War II.