Background
Dyrssen was born in Stockholm, Sweden and was the son of admiral Wilhelm Dyrssen and baroness Lizinka af Uggla and brother of Magnus Dyrssen.
Dyrssen was born in Stockholm, Sweden and was the son of admiral Wilhelm Dyrssen and baroness Lizinka af Uggla and brother of Magnus Dyrssen.
He became a second lieutenant at the Svealand Artillery Regiment (A 1) in 1912 and studied at the Artillery and Engineering College (Artillerioch ingenjörhögskolan) from 1914 to 1915. Dyrssen became a lieutenant in 1915 and studied at the War College from 1917 to 1919.
He was a cadet at the General Staff from 1920 to 1922, became captain in 1924 and served at the State Railways from 1924 to 1926. Dyrssen was a teacher at the Artillery and Engineering College from 1926 to 1932, captain at the Svealand Artillery Regiment from 1930 to 1932, captain at the General Staff in 1932 and head of division in the Railway Board (Järnvägsstyrelsen) from 1932 to 1937. He was appointed to major in 1934, was the first adjutant and lieutenant colonel in the General Staff in 1937.
Dyrssen was head of the communications department at the Defence Staff from 1937 to 1939 and lieutenant colonel and commander of the Gotland Artillery Corps (A 7) in 1939.
Dyrssen was appointed colonel in 1940 and was commander of the Svealand Artillery Regiment from 1941 to 1942, the commandant of the Boden Fortress as well as the deputy military commander of the VI. Military Area from 1942 to 1945. He was appointed major general in 1944 and was the military commander of the IV. Military Area and superior commandant in Stockholm from 1945 to 1957.
He retired from the Army in 1957 and was appointed lieutenant general in the reserve.
International Olympic Committee]
Dyrssen was a prominent sports administrator, serving as president of the Swedish Fencing Federation (1936–1940), president of the International Modern Pentathlon Union (IUPM, 1949–1960), and a member of the International Olympic Committee (1952–1970), among other posts. He became a member of the Swedish Olympic Committee in 1946 and was chairman of the Swedish Central Association for the Promotion of Sports (Sveriges centralförening för idrottens främjande) from 1947 to 1961, the Swedish Fencing Federation from 1936 to 1940, the Union Internationale de Pentathlon Moderne and the Biathlon Association from 1949 to 1960. Dyrssen was a member of the International Olympic Committee from 1952 to 1970 and of the Royal Swedish Academy of War Sciences in 1936.