 In its worst expression, Yugoslavia's defenses were badly compromised on 10 April 1941, when some of the units in the Croatian-manned 4th and 7th Armies mutinied, and a newly formed Croatian government hailed the entry of the Germans into Zagreb the same day.During the occupation of Yugoslavia, the Chetniks of Draža Mihailović were referred to as the "Yugoslav Army in the Homeland".The Royal Yugoslav Army was formally disbanded on 7 March 1945 when the Yugoslav government-in-exile appointed by King Peter II was abolished.