They remained in the original form until 1956 when Jammu and Kashmir Constituent Assembly effectively ratified the state's accession to India.

The earlier exploits of the Regiment includes the annexation of the entire Hill Region of Jammu and the Kashmir Valley.

All nine Battalions of the Regiment (1,2,3,4,5,6,7,8 & 9 Jammu and Kashmir Rifles) were strung over 500 miles of the frontier from Kathua in the South to Leh in the North.

[citation needed] On 18 March 1956 a large force of Pakistan Regiment Army launched an uprovoked attack against 4 Jammu and Kashmir Rifles then deployed to guard Husainiwala Headworks.

Due to its valiant actions over the years including 1947-48 operations in Jammu and Kashmir, the Regiment was amalgamated enbloc into the Indian Army on 15 January 57 without any dilution in rank structure and came to be known as Jammu and Kashmir Regiment.

Seven of the eleven Battalions of the Regiment(3,4,5,6,7,8 & 9 Jammu and Kashmir Rifles) participated in 1965 war, wherein seven Officers and 167 men attained martyrdom in the line of duty and was the Regiment awarded with the Battle Honour of ASAL UTTAR (by 9 Jammu and Kashmir Rifles) in Khem Karan Sect and Theatre Honour PUNJAB.