Eighty-four years ago today, on April 6, 1941 (March 10, 1941), Yugoslavia was invaded by Germany and Italy. A German Watchtower April 6, 1941 Yugoslavia was invaded by Germany and Italy. After the outbreak of World War II, Hitler forced Yugoslavia to sign the protocol on March 25, 1941 to join the German-Italian-Japanese Axis powers. The Yugoslav military and civilians staged a coup on the night of the 26th to overthrow the government. The new regime declared the agreement with Germany invalid. Hitler and Italy launched a large-scale attack on Yugoslavia at dawn on April 6. On the 13th, the Germans occupied Belgrade. The king and ministers fled abroad. The Yugoslav High Command surrendered on April 17. While the Axis powers partitioned the country, communist guerrillas fought a determined war of resistance under the leadership of the previously little-known Tito. Tito is hidden in his mountains