Formed in
Athens in 1945 as the
Higher Military Command of Attica (;
Anotéra Stratiotikí Deíkisi Attikís,
ASDA), by 1961 it had evolved from a territorial defence force to a Corps-sized formation, overseeing the Aegean region's four National Guard Commands. It was soon renamed to the
Supreme Military Command of the Interior and Islands (;
Anotati Stratiotikí Deíkisi Esoterikoú ke Níson,
ASDEN) to reflect the expansion of its role. In 1995, the command's headquarters were relocated to the suburb of Karea in
Athens,
Attica, and by 2005 it had become a major operational formation of the
Hellenic Army, consisting of two
division and five
brigade-strength, mechanized, National Guard Battalion Higher Commands (;
Anóteri Deíkisi Tagmáton Ethnofylakís, ADTE). After a wide-ranging defense review in 2013, the Corps' capabilities were strengthened with the
5th Infantry Brigade reorganized as an
air assault brigade to become ASDEN's
rapid reaction force. ==Emblem and motto==