5th Gorkha Rifles (Frontier Force) (? Date)
 
The Royal Gurkha Rifles (RGR) is a rifle regiment of the British Army, forming part of the Brigade of Gurkhas. Unlike other regiments in the British Army, RGR soldiers are recruited from Nepal, which is neither a dependent territory of the United Kingdom nor a member of the Commonwealth.
 
The numbering system of the Gurkha units started in 1861 based on the Regiments loyalty during the Indian Mutiny, with only 12 of 74 regular regiments of the Bengal Native Infantry not mutining. 
 
Following India´s Independence on 15 August 1947 the Gurkha regiments were divided between Great Britain and India.
 
1 GR - 3 GR - 4 GR - 5 GR -8 GR - 9 GR stayed with the Republic of India.
2 GR - 6 GR - 7 GR - 10 GR went with Great Britain (United Kingdom).
 
In 1950 the Indian Army adopted "Gorkha" as an official spelling for their regiments. 
 
In 1994 the 2 GR - 6 GR - 7 GR - 10 GR amalgamated to form the Royal Gurkha Rifles (RGR).

The 5 Gorkha Rifles (Frontier Force) is an infantry regiment of the Indian Army comprising Gurkha soldiers of Nepalese origin. It was formed in 1858 as part of the British Indian Army and served in the First World War and Second World War. The regiment was one of the Gorkha regiments that was transferred to the Indian Army following independence in 1947. The regiment was formerly known as the 5th Royal Gurkha Rifles (Frontier Force). Since 1947, the regiment has served in a number of conflicts, including the Indo-Pakistani War of 1965 and the Indo-Pakistani War of 1971. It has also participated in peacekeeping operations in Sri Lanka.