The Leopard 2A4 is the most widely produced variant of the German Leopard 2 main battle tank, which entered service in 1985. This version received a new turret with enhanced armour protection, a digital fire control system and numerous other improvements to increase operational convenience. In addition to being used by the German military, Leopard 2A4 tanks were also exported, including to Finland. In 2003, the Finnish Defence Forces acquired 124 Leopard 2A4 tanks to replace their outdated Soviet T-55 and T-72 tanks. Six of these were used as bridgelayers with Leguan bridge module, six for mine clearance and twelve for spare parts. Later, in 2009, an additional 15 Leopard 2 tanks were purchased for use as reserve vehicles. The Finnish tanks were fitted with additional storage baskets for spare parts, a new Tadrin VRC-959 radio, extra anti-slip coating and new three-colour camouflage. Some Finnish Leopard 2A4 tanks have been transferred to Ukraine.

The Finnish Leopard 2A4 was introduced in Update 2.21 "Fire and Ice" as a part of the Swedish ground research tree. Compared to the German 2A4, it features unique camouflage. In terms of combat performance, it is one of the most versatile MBTs at its rank thanks to its excellent mobility and speed, powerful 120 mm Rh 120 L/44 gun with fast reload, decent composite armour and good survivability thanks to blow-out panels on the rear of the turret. However, it should be noted that if the tank is loaded with more than 16 rounds, the remaining ammunition is stored in the front hull, which is sometimes insufficiently protected against powerful APFSDS rounds and tandem ATGMs.