Infantry
In 1857 the four regiments of Sikh Local Infantry became Sikh Infantry, Punjab Irregular Force.
The six Punjab Infantry regiments were simply redesignated Infantry, Punjab Irregular Force.
The 4th Regiment of Sikh Infantry served in the Second Burma War, winning the honour P, and then marched 900 km from Abbottabad in thirty days to help suppress the revolt in Delhi, and like the Guides going into action on arrival. There it won also D 1857. The other Sikh Infantry regiments remained in the Punjab.
Leaving the 3rd, 5th, & 6th Punjab Infantry Regiments to guard the frontier, the 1st, 2nd, and 4th were sent to put down the revolt in Delhi. There they earned the honour D 1857. The 2nd and 4th regiments were also rewarded with L.
From 1861 the force included a 7th Infantry Regiment, formed from the Hazara Gurkha Battalion, which later that year joined the Gurkha Line as the 5th Gurkha Regiment.
Read more about this topic: Military History Of The North-West Frontier, Military Formations, Punjab Irregular Force