When Kashmir Valley was invaded by Pakistan immediately after the attainment of Independence, Kumaon Regiment rose to the occasion and played a key role in thwarting the large scale infiltration from across the border. Maj Som Nath Sharma's company, battling all odds, did not allow the enemy to capture Srinagar airfield at Badgam. However, he had to lay down his life. Maj Som Nath Sharma, for his gallant action, was honoured with Param Vir Chakra posthumously. In the same vein, Maj Gen KS Thimmaya, the then GOC of 19 Infantry Division, moved tanks across Zojila Pass to chase away the infiltrators.

The 1962 war saw an active participation of 6 and 13 Kumaon at Walong and Rezang-La in Ladakh. At Rezang-La, 114 other ranks saw action out of whom 106 soldiers laid down their lives. This was a matchless feat in the history of sacrifice of any regiment and it was well recognised the world over. It was here that Maj Shaitan Singh of 13 Kumaon laid down his life in action. He was honoured posthumously with Param Vir Chakra for his exemplary leadership. At Walong, 6 Kumaon led the action against the Chinese. In 1965, the regiment again proved its mettle.

Four Kumaon, one of the most decorated and oldest battalions of Indian Army, was the first battalion of Army to be presented Colours on April 7, 1961 for its glorious deeds and unique performance, both in peace and war, by the first President of India, late Dr Rajendra Prasad. On October 27, 1970, 14 Battalion of the regiment also received Colours at Ranikhet from the then President, late Mr VV Giri.

November 1970 was a turning point in the history of the regiment. The Naga Regiment, raised at Ranikhet, was affiliated to the Kumaon Regiment. This was a unique honour. The Kumaon Regiment was selected on the demand of Nagas. It was the Kumaon units which won the hearts and minds of Naga brethren during counter-insurgency operations in 1950s and 60s in North-East. A Scouts Battalion joined the regiment from Border Scouts in 1981 and was designated Kumaon Scouts.

In 1971 war against Pakistan, battalions of the Kumaon and Naga Regiments played significant role in helping Bangladesh to attain freedom. During operation Blue Star, the regiment won many laurels including two Ashok Chakra (posthumously) by Maj Bhukant Mishra and Nk Nirbhay Singh of 15 Kumaon. The regiment also performed admirably in operation Pawan and won one Uttam Yudh Seva Medal, one Vir Chakra, one Yudh Seva Medal, seven Sena Medals, one Bar to Sena Medal, eight Mentions-in-Despatches, 12 Chief of Army Staff and 7 GOC commendation cards. It was the Kumaonis who were the chosen ones to meet the operational requirements in Siachen Glacier and Bila Fond La during operation Meghadoot.

In Punjab and Jammu and Kashmir operations, the regiment distinguished again. The third Ashok Chakra of the regiment was won by Sub Sujjan Singh of 13 Kumaon who died while fighting against insurgents in 1994. The fourth Ashoka Chakra was won by Nk Rambeer Singh Tomar of 15 Kumaon who was posted to 26 Rashtriya Rifles in Doda district. The gallant soldiers fought with the same spirit during operation Vijay.