The Merkava Mk.3D Main Battle Tank (MBT) in service in Israel Defense Forces (IDF) is the revised version of the Merkava Mk.3, equipping with a 120mm smoothbore gun, the BAZ gunner’s sight and the panoramic commander’s sight. The detachable add-on armor plates at the turret roof and its sides greatly increased the protection ability. As the most widely equipped MBT by IDF, the Merkava Mk.3D took action in the second Lebanon war in 2006, “Cast Lead” operation in the Gaza strip in the winter of 2009 and many other security activities along Israeli border.