After the reorganisations that took place in the aftermath of the Indian Rebellion of 1857, the regiment's designation was changed to the "9th Bengal Native Infantry" in 1861;[1] at this time one of its companies was formed by Gorkhas and the others by hillmen.

[4] In response to a peaceful civilian public gathering, that included entire families, temporary brigadier general R. E. H. Dyer blocked the only open entrance/exit to this meeting place with the 9th Gurkha infantry regiment of the British Army.

Dyer also had sat his disposal a British armored car sporting a machine gun, but it couldn't enter the courtyard as a result of a narrow passageway.

Estimates of those killed (many argue murdered) vary from 379 to 1,500 or more people;[1] over 1,200 others were injured, of whom 192 sustained critical injuries.

[5] In World War II, the regiment's battalions fought in Malaya,[6] Italy, and North Africa.

[14] It continued in use with khaki drill service dress as general wear by all ranks in winter and summer, between the two world wars.