The current name and basic organization dates from October 1, 1967, when Forsvarsstabens Efterretningsafdeling, the Intelligence Section or the Intelligence Department of the General Staff, was detached from Forsvarsstaben by decree of the Ministry of Defence, as a separate authority of its own, located directly under the Ministry of Defence. The origin can be traced back to Generalstabens Efterretningssektion created 1911 and Marinestabens Efterretningssektion created 1920s & served in World War I & II. During the reconstruction of the Danish military following Denmark’s joining of NATO, these two intelligence services were merged on October 1, 1950, as Forsvarsstabens Efterretningsafdeling as a department under the newly erected combined military staff, the Forsvarsstab. The origin of the Danish military intelligence is uncertain. 1911 appears in one of the few histories of the Danish military intelligence. However 1903 has also been suggested as the year of the establishment of the military intelligence. During the Cold War, the military intelligence as well as the intelligence section of the police spied against and recorded the activities of the Danish left wing, communists and pacifists, among the later organisations and personalities in the Danish chapter of the War Resisters' International, the Danish Campaign against Nuclear Weapons and the Conscientious Objectors' Union. This is documented in the Danish Judge Advocate General's Corps: Report on the occasion of the examination by the Judge Advocates of certain matters related to Defence Intelligence Service and Conscientious Objectors' Union etc. in the period 1970-1978.
Four organizations, independent of each other, do various auditing of FE for unauthorised conduct. The service is directly responsible to the Defence Minister, which on behalf of the Government of Denmark supervises the overall actives and conduct of the service. The DDIS is, as Danish Security Intelligence Service is, subject to regularly control by the Wamberg committee, established in 1964, which is controlled by the Ministry of Justice. It is also subject to Folketingets control committee, which was established by law no. 378 of July 6, 1988. And finally, as all Danish government agencies, FE is subject to control by Rigsrevisionen, to ensure that the money granted to the institution is really spent as Folketinget has decided.