In the 1922 reorganisation of the British Indian Army the four Sikh regiments became the first four battalions of the newly-constituted 12th Frontier Force Regiment whilst the infantry element of the Corps of Guides became its 5th and 10th (training) battalions.
The four Sikh regiments became the first four battalions of the newly-constituted 12th Frontier Force Regiment whilst the infantry element of the Corps of Guides became its 5th and 10th (training) battalions. This was in the 1922 reorganisation of the British Indian Army.