Tanks in World War I
The continued need for four men to drive the tank was solved with the Mark V which used Wilson's epicyclic gearing in 1918. Also in 1918 the French produced the Renault FT, the result of a co-operation between Estienne and Louis Renault. As mentioned before, it had the innovative turret position, and was operated by two men. At just 8 tons it was half the weight of the Medium A "Whippet" but the version with the cannon had more firepower. It was conceived for mass production, and the FT became the most produced tank of World War I by a wide margin, with over 3,000 delivered to the French Army. Large numbers were used by the Americans and several were also lent to the British.
Tanks of the post–Cold War era
The "Arjun" features a 120 mm main rifled gun with indigenously developed APFSDS ammunition, one 7.62 mm coaxial machine gun, and a 12.7 mm machine gun. It is powered by a single MTU multi-fuel diesel engine rated at 1,400 hp, and can achieve a maximum speed of and a cross-country speed of . It has a four-man crew: commander, gunner, loader and driver. Automatic fire detection and suppression and NBC protection systems are included. All-round anti-tank warhead protection by the newly developed Kanchan armour is claimed to be much higher than available in comparable third generation tanks.
The Al-Khalid tank (—, "lit." The Immortal Tank) and MBT-2000 refers to the main battle tank of Pakistan of jointly developed variants made by Pakistan and China during the 1990s. About 300 Al-Khalid tanks were in service with the Pakistan Army as of 2009.
Operated by a crew of three and armed with a 125 mm smooth-bore tank gun that is reloaded automatically, the tank uses a modern fire-control system integrated with night-fighting equipment and is capable of firing many types of anti-tank rounds as well as guided anti-tank missiles. Al-Khalid is named after the 7th-century Muslim commander Khalid bin al-Walid (592–642 AD).