The first armored bulldozer (D7A) was developed by the British during World War II. This was a conventional Caterpillar D7 bulldozer fitted with armor to protect the driver and the engine. The work was carried out by Jack Olding & Company Ltd of Hatfield. The bulldozer was one of several strange armored vehicles that were collectively referred to as "Hobart's Funnies" and were operated by the British 79th Armoured Division in support of armored assaults.
