The Regiment of Artillery is a combat/fighting arm of the Indian Army, which provides massive firepower during all ground operations of the Indian Army. It is a successor to the Royal Indian Artillery (RIA) of British Indian Army, which itself traces its origins to the formation of Bombay Artillery in 1827.

The Army Aviation Corps (AAC) is the youngest arm of the Indian Army, being formally designated on 1 November 1986. The Army Aviation Corps units are designated as Squadrons. Each squadron generally consists of two Flights. Reconnaissance (Recce) and Observation flights might be part of squadrons or operate independently. The latter do not have a parent squadron and are designated by an (I) in their name.