In the late 1980s, to replace their ageing fleet of M48A1s, the ROCA purchased several hundred M60A3 TTS, and plans were made to upgrade the existing fleet of Pattons by utilising spare hulls obtained from the United States. The result was a hybrid tank, combining an M60A3 hull, an M48A5 turret, and an M1 Abrams-equivalent FCS, which became known as the CM11. Additionally, some spare M48A5 turrets were mounted on a few dozen M48A1s, resulting in the CM12 variant. The initial batches of these hybrid tanks became the spearhead of the ROCA's armoured corps, particularly intended to counter potential PLA landing operations. The CM11 has faithfully served for over three decades but may soon be replaced by the M1A2T from the United States. This particular representation of the CM11 is equipped with an experimental French GIAT ERA package, providing enhanced protection against chemical shells.

Introduced in Update 1.91 "Night Vision", the CM11 is a Taiwanese upgrade to the M60A3, mating the M60 chassis with the turret from the M48 Patton, with a unique pagoda-like ERA array on the turret sides. Though its mobility and kinetic protection are poor, it has the same 105 mm gun as the M1 Abrams, so if used carefully, the CM11 can do some serious damage with its thermal sight and powerful DM63 APFSDS.