British India → Pakistan

12^th Frontier Force Regiment

	Punjab Irregular Force
1846:	1st Regiment of Infantry, Frontier Brigade │	2nd Regiment of Infantry, Frontier Brigade │	3rd Regiment of Infantry, Frontier Brigade │	4th Regiment of Infantry, Frontier Brigade │	The Corps of Guides │ │
1847:	1st Regiment of Sikh Local Infantry │	2nd Regiment (Hill Corps) of Sikh Local Infantry │	3rd Regiment of Sikh Local Infantry │	4th Regiment of Sikh Local Infantry │	│ │ │
1857:	1st Regiment of Sikh Infantry │	2nd Regiment (Hill Corps) of Sikh Infantry │	3rd Regiment of Sikh Infantry │	4th Regiment of Sikh Infantry │	│ │ │
1857:	1st Regiment of Sikh Infantry, Punjab Irregular Force │	2nd (Hill) Regiment of Sikh Infantry, Punjab Irregular Force │	3rd Regiment of Sikh Infantry, Punjab Irregular Force │	4th Regiment of Sikh Infantry, Punjab Irregular Force │	The Corps of Guides, Punjab Irregular Force │ │
1865:	1st Regiment of Sikh Infantry, Punjab Frontier Force │	2nd (Hill) Regiment of Sikh Infantry, Punjab Frontier Force │	3rd Regiment of Sikh Infantry, Punjab Frontier Force │	4th Regiment of Sikh Infantry, Punjab Frontier Force │	The Corps of Guides, Punjab Frontier Force │ │
1876:	│ │ │	│ │ │	│ │ │	│ │ │	Queen’s Own Corps of Guides, Punjab Frontier Force │
1901:	1st Sikh Infantry │	2nd (Hill) Sikh Infantry │	3rd Sikh Infantry │	4th Sikh Infantry │	Queen’s Own Corps of Guides │
	Renumbering into the Indian Army
	│	│	│	│	│
1903:	51st Sikhs (Frontier Force)	52nd Sikhs (Frontier Force)	53rd Sikhs (Frontier Force)	54th Sikhs (Frontier Force)	Queen’s Own Corps of Guides (Lumsden’s) (Frontier Force)
	│	│	│	│	│
1911:	│ │ │	│ │ │	│ │ │	│ │ │	Queen Victoria’s Own Corps of Guides (Frontier Force) (Lumsden’s) │
1917:	│ │ │	│ │ │	│ │ │	2nd Bn raised │ │	2nd Bn raised 3rd Bn raised │
1921:	51st The Prince of Wales’s Own Sikhs (Frontier Force) │	│ │ │ │	│ │ │ │	2nd Bn disbanded │ │ │	3rd Bn disbanded │ │ │
1922:	1st (Prince of Wales’s Own) Bn,	2nd (Sikhs) Bn,	3rd (Sikhs) Bn,	4th (Sikhs) Bn,	5th (Queen Victoria’s Own Corps of Guides) Bn,	10th (Queen Victoria’s Own Corps of Guides) (Training) Bn,
	12th Frontier Force Regiment
	│
1940:	6th Bn raised 7th Bn raised │
1941:	8th Bn raised 9th Bn raised 14th Bn raised │
1942:	2nd Bn captured 1st Afridi Bn raised │
1943:	10th Bn → Regimental Center │
1944:	6th Bn disbanded │
1945:	The Frontier Force Regiment
	│
1946:	9th Bn → 2nd Bn 7th Bn disbanded 14th Bn disbanded 1st Afridi Bn disbanded │
			Pakistan
			│
1947:	1st, 2nd, 3nd, 4th, 5th and 8th Bn │
1948:	4th Bn split off → 1st Bn, The Pathan Regiment 9th Bn raised │
			Islamic Republic of Pakistan
			│
1956:	merged into The Frontier Force Regiment