The M60 Patton is a main battle tank (MBT) introduced in December 1960. With the United States Army's deactivation of their last (M103) heavy tank battalion, the M60 became the Army's primary tank during the Cold War. Although developed from the M48 Patton, the M60 series was never officially classified as a Patton tank, but as a "product-improved descendant" of the Patton series. On 16 March 1959, the OTCM (Ordnance Technical Committee Minutes) #37002 officially standardized the vehicle as the 105 mm Gun Full Tracked Combat Tank M60. The M60 is used by the Alliance of Nations and the Coalition of Independent States.