 Complete the following phrase:  He was born in Oslo as a son of Lieutet Colonel Toralf Øyen 18781963 and Elia Haugros 18761951. He took his examen artium at Riis in 1934. He enrolled in medicine studies in 1936, but his studies were interrupted by World War II. He participated in the Battle of Midtskogen on 10 April 1940, one day after 