The Leopard 2 is a main battle tank developed by Krauss-Maffei in the early 1970s for the West German Army. The tank first entered service in 1979 and .br German Leopard 2 Main Battle Tank UBEATABLE M1 ABRAMS RIVAL - History Documentary HD ▻Subscribe: The .br br German Leopard 2 Main Battle Tank UBEATABLE M1 ABRAMS RIVAL - History Documentary HD The Leopard 2 is a main battle tank developed by .