In 1950, as part of the Portuguese military reforms related with the lessons learned following World War II, the start of the
Cold War and the foundation of
NATO, the roles of
minister of National Defence and of Chief of the Armed Forces General Staff (CEMGFA) were created. The creation of these roles was a major step in the planned integration of the several military
service branches and so the establishment of the Armed Forces of Portugal as a single organization. The CEMGFA assumed most of the responsibilities until then assigned to the military heads of the Navy and of the Army, the then existing service branches, as the Air Force would only be created in 1952. At the same time and as a forerunner of a future General Staff, the
Secretariat-General of National Defence () or
SGDN was established. The SGDN was the central planning organization of the Defence, being headed by the CEMGFA. In 1969, it was decreed that SGDN should be remodelled in order to be transformed into the Armed Forces General Staff (EMGFA), as the organization for the joint administration of the Armed Forces. However, transformation of the SGDN into the EMGFA occurred only in 1974. == Organization ==