The Challenger was introduced in 1983, as the new MBT for the British Army. While reliability and performance were debated during the Canadian Army Trophy of 1987, their action in Operation Granby, the British contribution to the Gulf War, gave them a chance to prove their worth. In this time, the British Army deployed the 1st Armoured Division in the Middle East with 3 Armoured Brigades equipped with Challenger tanks, some of which were the latest Mk.3 variant with new ERA installed. The Challengers had a good performance, dealing with several T-55s and Type 69s while not losing a single tank. A Challenger tank holds the record for the longest tank-to-tank kill, achieving a destruction at a range of 5.1 km in 1991.

It was introduced in Update "Danger Zone". The Challenger Mk.3 Desert Storm is identical to the Challenger Mk.3 found in the tech tree, the only difference is the visual discrepancy and the fact that it lacks ROMOR-A ERA on the front of the vehicle. Compared to most Soviet and other NATO platforms, the Challenger is very heavy and quite slow; while it struggles to accelerate, it has a very good top speed and an excellent reverse speed. The cannon is a powerful 120 mm gun, with access to 1st generation thermals for the gunner, which means that it has a very competent armament for its BR.