The regiment was raised during the Gurkha War by Sir Robert Colquhoun on 24 April 1815 as the Kemaoon Battalion.[1] It did not consist entirely of Gurkhas but of men from Kumaon and Garhwal. The regiment adopted the tartan of the Clan Colquhoun. The regiment was primarily used to police the border with Nepal, doing so for many decades until the Indian Mutiny began in 1857. The battalion was actively involved in the efforts to quell it. During the Siege of Delhi—which lasted from March to September 1857—the regiment, part of Colonel Colin Campbell's Third Column, took part in the storming of Kashmiri Gate and gained the Battle Honour "Delhi 1857". The mutiny was quelled by July 1858. The regiment, having been brought into the line of the Bengal Army, was briefly titled the 18th Bengal Native Infantry in 1861 before the regiment gained its present numeral designation when it became the 3rd Goorka (The Kumaon) Regiment. The regiment saw service in an expedition to Bhutan shortly after the name change.
3rd Goorkhas during the march to Kabul. In 1878 the Second Afghan War began and the regiment, as part of the 2nd Infantry Brigade of the Kandahar Field Force, took part in the march to seize Kandahar. The field force successfully captured the city on 8 January 1879, having experienced great hardship on the march there. The following year the Kandahar Force began the march towards the Afghan capital Kabul to join Major-General Roberts force in an attempt to consolidate their situation in the country. During the journey, near Ghaziri, the force were attacked by a large force of Afghan tribesmen at Ahmad Khel on 19 April 1880. The fighting that ensued was intense and the field force's situation was in the balance until the Afghan forces were successfully repulsed when the 3rd Goorkhas formed an infantry square.

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