Before the modern era, the King was expected to command the forces himself; not seldom on location during war campaigns as shown by Gustavus Adolphus, Charles X, Charles XI and Charles XII. This remained the case formally until the 20th century. From the late 19th century onwards, there were no service chiefs of the Army or Navy; all senior service commanders reported directly to the King in Council. Apart from a single Minister for Defence created in 1919 by merging the position of ministers of the land forces and naval forces, no joint command structure existed. In 1936, a Supreme Commander was intended to be appointed in war-time-only, and on 1 December 1939, during World War II, the first Supreme Commander, General Olof Thörnell, was appointed. In 1942 it was decided to keep this office even after the end of the war. The Supreme Commander would in wartime formally report to the King in Council until the enactment of the new Instrument of Government in 1974, and after 1 January 1975 to the Government.
Heraldry
The command flag of the Supreme Commander is drawn by Brita Grep and embroidered by hand by the Kedja studio, Heraldica. Blazon: "Fessed in blue and yellow; on blue three open yellow crowns placed two and one, on yellow two blue batons of command with sets of open yellow crowns placed two and one in saltire." The coat of arms of the Supreme Commander was used from 1991 to 1993. It has since 1993 been used by the Swedish Armed Forces and was used from 1994 to 2001 by the Swedish Armed Forces Headquarters. Blazon: "Azure, the Swedish minor coat-of-arms, three open crowns or placed two and one. The shield surmounting an erect sword of the last colour".
Every time a new Supreme Commander is to be appointed, there is some debate between the different services. Some feel that some kind of rotational system would be appropriate. In actuality, most Supreme Commanders have come from the Army, and only one, Håkan Syrén, from the Navy. Because he is a General of the Amphibious Corps, there has to this day not been a single Admiral to hold the office.
List of Deputy Supreme Commanders
Until 30 June 1994, the Chief of the Defence Staff was the second most senior member of the Swedish Armed Forces. When the Swedish Armed Forces was reorganized on 1 July 1994, the Chief of the Defence Staff position was abolished. Lieutenant General Percurt Green became the first Deputy Supreme Commander who took office on 1 July 1994. He also held the post of head of the Joint Operations Command. In conjunction with the Swedish Armed Forces Headquarters reorganization in 1998, a special position was created as Deputy Supreme Commander to relieve the Supreme Commander. The Deputy Supreme Commander led the Headquarters work through coordination of the operations. He also exercised employer responsibility for the staff in the Headquarters. In order to coordinate the operations he had a Coordination Department. The Deputy Supreme Commander also acted as the Deputy Agency Executive. A formal position of head of the Swedish Armed Forces Headquarters was established in 2002.