Mirković led and organised the Yugoslav coup d'état of 27 March 1941 that deposed the regency of Prince Paul, Dr. Radenko Stanković and Dr. Ivo Perović, as well as the government of Prime Minister Dragiša Cvetković. Mirković and his fellow plotters declared the 17-year-old Prince Peter to be of age and brought to power a government of national unity led by Air Force General Dušan Simović. The coup was carried out at British instigation and involved British intelligence operatives. Mirković and the other plotters were all funded by the British. The coup resulted in the German-led invasion of Yugoslavia on 6 April 1941 during which the armed forces of Yugoslavia were defeated within 11 days. On 14 April 1941, Mirković handed command of the air force to Colonel Petar Vukčević, the commander of the 4th Bomber Brigade. On 16 April, he was fleeing the country by air when the aircraft he was travelling in was hit by Greek anti-aircraft fire near Preveza, and crashed. Mirković was seriously injured. He was based in Cairo for a period, where he was involved with a faction of the Yugoslav government-in-exile that was supported by British intelligence in Egypt. He died in London on 21 August 1969.
