Office of Defense Cooperation Turkey

The Office of Defense Cooperation Turkey (ODC-T, ABD Savunma İşbirliği Ofisi) to Turkey is a United States Security Assistance Organization (SAO) to Turkey. It was established in 1947 as the Joint American Military Mission for Aid to Turkey (JAMMAT), and renamed the Joint United States Military Mission for Aid to Turkey (JUSMMAT) in 1958. It became the ODC-T in 1994. After Turkey joined NATO in 1952, JAMMAT became the largest of the United States European Commands (USEUCOM). JAMMAT and JUSMMAT played a key role in establishing the Counter-Guerrilla, the Turkish branch of Operation Gladio.

History
After the British government declared on 21 February 1947 its inability to provide financial aid (though she would establish the Central Treaty Organization a decade later), Turkey turned towards the United States, who drew up the Truman Doctrine, pledging to "support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures". $100 million was appropriated two months after the US Congress ratified the Truman Doctrine on 12 March 1947. This figure was raised to $233 million by 1950, after Turkey contributed a brigade of about 5000 men to the United Nations forces in the Korean War. In August 1947, the Joint American Military Mission for Aid to Turkey (JAMMAT) was established in Ankara under the authority of the US ambassador.

On 5 October 1947, a delegation of senior Turkish military officials traveled to the United States to establish the military framework of the co-operation agreement.

In December 1947, United States National Security Council (NSC) Directive 4-A "secretly authorised the CIA to conduct these officially non-existent programs and to administer them" in such a way that "removed the U.S. Congress and public from any debate over whether to undertake psychological warfare abroad". A few months later, the NSC replaced directive 4-A with directive 10/2, creating the Office of Policy Coordination (OPC, initially euphemistically called the "Office for Special Projects"), the covert action arm of the Central Intelligence Agency (CIA). The OPC's charter unambiguously called for "propaganda, economic warfare; preventative direct action, including sabotage, anti-sabotage, demolition and evacuation measures; subversion against hostile states, including assistance to underground resistance movements, guerrillas and refugee liberations [sic] groups, and support of indigenous anti-communist elements in threatened countries of the free world." In the words of career intelligence officer William Corson, "no holds were barred… all the guys on the top had said to put on the brass knuckles and go to work."

After joining the North Atlantic Treaty Organisation (NATO) on February 18, 1952, Turkey signed a Military Facilities Agreement on 23 June 1954, paving the way for a large scale US military presence. With a staff of 1200 by 1959, JAMMAT was the largest of the United States European Commands (USEUCOM), and also the world's largest military assistance and advisory group by 1951. JAMMAT was renamed to Joint United States Military Mission for Aid to Turkey (JUSMMAT) in 1958, and the Office of Defense Cooperation Turkey (ODC-T) (ABD Savunma İşbirliği Ofisi) on 1 May 1994.