After retiring from the military in 1966, Mangård worked for North American Aviation in Los Angeles and for SKF in Gothenburg, Tokyo and Madrid.

[1] He passed studentexamen in Västerås in 1936[2] and started his flight training at the Swedish Air Force Flying School in Ljungbyhed where he graduated at the top of his class as a fighter pilot.

[3] Mangård was promoted to lieutenant in 1941 and to captain in 1946[4] after passing the General Course at the Royal Swedish Air Force Staff College.

[2] In 1964, Mangård was appointed commanding officer of the Fourth Air Group (Fjärde flygeskadern, E 4) in Luleå and in 1965 he was promoted to major general.

[4][3] Mangård then continued working for Empresa Nacional de Electronica y Sistemas SA (INISEL) in Madrid from 1985 to 1988.