The M48 Patton has the distinction of playing a unique role in an event that was destined to radically alter the conduct of armored warfare. When US forces commenced redeployment operations, many of the M48A3 Pattons were turned over to the Army of the Republic of Vietnam (ARVN) forces, in particular creating the battalion-sized ARVN 20th Tank Regiment; which supplemented their M41 Walker Bulldog units. During the North Vietnamese Army (NVA) Easter Offensive in 1972, tank clashes between NVA T-54/PT-76 and ARVN M48/M41 units became commonplace. But, on , tankers of the 20th Tank Regiment were attacked by an NVA infantry-tank team, which was equipped with the new "9M14M Malyutka" (NATO designation: Sagger) wire-guided anti-tank missile. During this battle, one M48A3 Patton tank and one M113 Armored Cavalry Assault Vehicle (ACAV) were destroyed, becoming the first losses to the Sagger missile; losses that would echo on an even larger scale a year later during the Yom Kippur War in the Middle East in 1973. By 2 May, 20th Tank Regiment had lost all of their tanks to enemy fire. During the first month of the First Battle of Quảng Trị all ARVN M48 Pattons were lost.