Challenger 2 (CR2) is the British Army's main battle tank. CR2 is based on the Challenger 1 tank, which served with distinction on operations in the Gulf War and the Balkans. Although a logical development of Challenger 1, CR2 is greatly superior. It is protected by second generation Chobham Armour and features a new digital fire control system that includes a panoramic commander's sight, a laser range finder and a new version of the Thermal Observation and Gunnery Sight (TOGS II). The turret mounts the high pressure L30 120mm gun that fires conventional APDS-FS, HESH, smoke and depleted uranium projectiles with great accuracy.