The Kampfpanzer Leopard, subsequently Leopard 1 following the introduction of the successive Leopard 2, is a main battle tank designed by Porsche, and manufactured by Krauss-Maffei in West Germany, that entered service in 1965. Developed in an era when HEAT warheads were thought to make conventional heavy amour of limited value, the Leopard design focused on effective firepower and mobility instead of heavy protection. It featured moderate amour, only effective against low caliber autocannons and heavy machine guns, giving it a high power-to-weight ratio. This, coupled with a modern suspension and drivetrain, gave the Leopard superior mobility and cross-country performance compared to most other main battle tanks of the era, only being rivaled by the French AMX-30 and Swedish Strv 103