Military career Synnergren was commissioned as an officer with the rank of second lieutenant in 1939 and served in the
Ski Battalion (I 19 K) in
Kiruna during World War II and guarded the
Norwegian border when
Germany occupied Narvik. After the German attack on Norway on 9 April 1940, he as an intelligence officer in the regimental staff, on several occasions, alone and on skis, got into the war zone in
Northern Norway to make contact with the Norwegian forces and gather intelligence within the German dominated area. Because of his
fell experience and skills, he became, after a brief interlude as a cadet officer at Karlberg in 1944, the head of evacuation in
Jokkmokk and was as such responsible for management of the Norwegian refugees. He studied at the
Swedish National Defence College in 1960 During Synnergren's time as the Supreme Commander, a series of long-term decisions were made that meant big changes for the defense. The
policy of neutrality was concluded and thus the idea of a strong defense of universal
conscription. It was decided that the aircraft
Viggen would be developed while reorganizing and cut-backs were made in the Army and Navy. Synnergren was in the media most closely associated with
military intelligence as the secret intelligence agency
IB was exposed during his time as Supreme Commander.
Other work Synnergren had during and after his military career a series of positions of trust. He was chief of
His Majesty's Military Staff from 1978 to 1986, chairman of the
Swedish Tourist Association from 1976 to 1987 and chairman of the
Swedish Ski Association from 1973 to 1975. and board member of
Saab-Scania from 1981 to 1990,
LKAB from 1982 to 1986, Saab Combitech from 1982 to 1990 and the
International Ski Federation from 1976 to 1988. an agency which occupied a special position among the agencies engaged in the Swedish military intelligence. ==Personal life==