12th Frontier Force Regiment
12th Frontier Force Regiment was formed in 1922. It consisted of five regular battalions; numbered 1 to 5 and the 10th (Training) Battalion. During the Second World War further battalions were raised
- 1st Battalion: see 1st Regiment of Sikh Infantry, Punjab Frontier Force. Known as the 51st Sikhs
- 2nd Battalion: see 2nd Regiment of Sikh Infantry, Punjab Frontier Force. Known as the 52nd Sikhs
- 3rd Battalion: see 3rd Regiment of Sikh Infantry, Punjab Frontier Force. Known as the 53rd Sikhs
- 4th Battalion: see 4th Regiment of Sikh Infantry, Punjab Frontier Force. Known as the 54th Sikhs
- 5th Battalion: see Corps of Guides, Punjab Frontier Force
The 14th Battalion, previously the 11th Battalion, served in Burma. 
The Frontier Force Regiment, compiled by Brigadier W. E. H. Condon 1962. Available online, refer below.
- 12th Frontier Force Regiment Wikipedia
- 12th Frontier Force Regiment pakdef.org, now an archived webpage.
- Frontier Force Regiment defence.pk
Historical books online
- The Frontier Force Regiment compiled by Brigadier W. E. H. Condon 1962. Link to a pdf download, PAHAR - Mountains of Central Asia Digital Dataset (MCADD).
- WW2Talk Forum thread Help needed re.12th Frontier Force Rifles research. In particular post #15 by dryan67 dated 10 January 2014 contains an attachment with full details which seems to be available without restriction. (If not, you will need to be a logged in member of WW2Talk Forum). David A Ryan is co author of books on the Indian Army in WW2, see the WW2Talk Forum post Indian Army: An Organisational History. Retrieved 21 April 2014.
- dryan67 14/12 Frontier Force Regiment and The Ajmer Regiment WW2Talk Forum 24 November 2015. Retrieved 12 December 2015.