The Singapore Army is the land service branch of the Singapore Armed Forces (SAF). The largest of the four branches of the SAF, the Singapore Army traces its origins to the 1st Battalion, Singapore Infantry Regiment, which was formed in 1957, when Singapore was still under British colonial rule. After Singapore's independence on 9 August 1965, the Singapore Army Bill was passed in Parliament on 23 December 1965, and National Service (NS) was subsequently introduced in 1967. Mostly made up of conscripts, the Singapore Army can mobilise all operationally-ready military reservists in the event of war or national exigencies.

Armour is the formation of the Singapore Army responsible for armoured warfare. It provides mobile firepower support and rapid mobility for the Army by helping to spearhead an advance past the enemy defences and seizing and holding key objectives on the battlefield. It has four active battalions—the 40th, 41st, 42nd and 48th Battalions, Singapore Armoured Regiment (SAR)—based in Keat Hong Camp and Sungei Gedong Camp, as well as an undisclosed number of reservist battalions.