The Office of Defense Cooperation Turkey (ODC-T, Turkish: 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).