It was not possible to commence conversion of all the four battalions simultaneously.  The 2/2nd Punjab and 1st Grenadiers were then in J&K, and adequate accommodation was not available in Delhi to quarter the four battalions at one time.  It was thus that the 1/6th Rajputana Rifles was converted first as 3 GUARDS on 1 September 1949, followed by the 1/7th Rajput as 4 GUARDS on    26 January1950.  The next to be converted was the 2/2nd Punjab which became 1 GUARDS on  1 April 1951, followed  by  the  1st  Grenadiers  which took on the new designation as 2 GUARDS on  1 August 1952.