The regiment was part of 1st Armoured Division during the Indo-Pakistani War of 1971 and was located in the general area of Muktesar and Malaut but did not see any action. 65th Armoured Regiment was one of the first regiments in the Army to be equipped with T-72 tanks. Along-with its new tanks, it proceeded to Sri Lanka during Operation Pawan. It was one of the first units to reach Sri Lanka, arriving in Jaffna in October 1987, and was amongst the last to de-induct, returning to India in March 1990. The regiment performed a wide variety of roles including clearing road-blocks, keeping railways and roads open, ambushes and raids. The regiment lost an officer, one JCO and 15 soldiers killed, and nine soldiers wounded. A troop of tanks of "A" Squadron of the Regiment was the first to be airlifted to Jaffna and they participated in the battle of the Jaffna University along with 72 & 115 Infantry Brigades under 54 Infantry Division. This action culminated in the subsequent relief of Jaffna Fort. The troop eas later augmented by the complete squadron. It was during this action that the Regiment earned its first gallantry awards in combat, One VrC and One SM It has since actively participated in OP Rakshak II as also in OP PARAKRAM.
The cap badge at the time of raising was the generic Armoured Corps badge and shoulder title comprised the letters "65C" in brass. The regiment was in the process of designing a badge which comprised crossed lances with pennons, and the numerals "65" at the crossing, with the regimental motto on a scroll along the base of the lances. It was the first-ever armoured regiment of Indian origin to adopt the scarlet backing of the cap badge and scarlet shoulder flashes. Also, it was the first unit where NCO's sported scarlet chevrons of rank against the traditional white. Just then, an order was issued by Army Headquarters that all newly raised regiments would no longer use the terms "Cavalry" or "Lancers", but instead be called "Armoured Regiments". The 65th was the first to take up the new designation. Accordingly, the cap badge was amended to include a small scroll below the numbers with the script "ARMD REGT" inscribed, which was barely visible. The more visible lower scroll carries the regimental motto, "Maan Ya Mrityu".
Previous commanders
Brig KK Kaul, Maj Gen RS Pannu, Maj Gen DSC Rai, Maj Gen DK Mehta, Col GS Bhullor, Brig SM Sahni, Col SL Kapur, Maj Gen Rajan Aney, Col VK Dougall, Col SP Khanna, Col AS Bhinder, Col Anil Kaul, VrC, Maj Gen IP Singh, Col Anil Talwar, Col Parminder Singh, SM, Maj Gen Taranjit Singh,, Brig D Dahiya, Col Mayank Awasthi, Col Sandeep Kapur,, Col Amitesh Verma, Col R Pachora.