Leopard 2A4 on the range

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 succeeded the earlier Leopard 1 as the main battle tank of the German Army. Various versions have served in the armed forces of Germany and twelve other European countries, as well as several non-European nations. More than 3,480 Leopard 2s have been manufactured.

The most widespread version of the Leopard 2 family, the 2A4 models included more substantial changes, including an automated fire and explosion suppression system, an all-digital fire control system able to handle new ammunition types, and improved turret with flat titanium/tungsten armour.
The Leopard 2s were manufactured in eight batches between 1985 and 1992. All the older models were also upgraded to 2A4 standard. Until 1994 Germany operated a total of 2,125 2A4s (695 newly built and the rest modified older versions), while the Netherlands had an additional 445 tanks. The 2A4 was also license manufactured in Switzerland as the Panzer 87 "Leopard" or Pz 87. This version included Swiss-built 7.5 mm Mg 87 machine guns and communications equipment, and featured improved NBC protection system. Switzerland operated 380 Pz 87 tanks.

At the turn of the century, Germany and the Netherlands found themselves with large stocks of tanks they had no need for after the end of the Cold War. These tanks were sold to NATO or friendly armies around the world. Among these were Austria, who received 114 vehicles, Canada (107), Chile (140), Denmark (51), Finland (139), Greece (183), Norway (52), Poland (128), Portugal (37), Singapore (96) Spain (108), Sweden (160), and Turkey (339) were among the buyers of the surplus tanks.

The Pz 87WE (WertErhaltung) is planned a Swiss modification and upgrade of the Pz 87. The modification significantly improves protection through the addition of the Leopard 2A6M's mine protection kit, thicker armour on the front glacis, and a turret equipped with a Swiss-developed armour package using titanium alloy. The turret roof armour is improved and the smoke grenade launchers redesigned. Further improvements enhance survivability and combat capability, such as a turret electric drive similar to the Leopard 2A5, a driver rear-view camera, an independent weapons station for the loader, and enhanced command and control systems. The fire control system is also upgraded, using the Carl Zeiss Optronics GmbH PERI-R17A2 fire control system. A remote weapons station containing a fully stabilized Mg 64 0.50 calibre machine gun is also fitted to the tank.