The Singapore Artillery is a formation of the Singapore Army. It is composed of four active battalions—the 21st, 22nd, 23rd and 24th Battalions—and an undisclosed number of reservist battalions. The primary role of the Singapore Artillery is to deliver timely, accurate and effective fire in support of the manoeuvre force to accomplish missions. As an indirect fire support system, the gunners rely on the forward observer and target acquisition elements to provide the target's location, which is then passed to the command post to direct the gunners to fire.