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Concept
Armored bulldozer
Summary
The armored bulldozer is a basic tool of combat engineering. These combat engineering vehicles combine the earth moving capabilities of the bulldozer with armor which protects the vehicle and its operator in or near combat. Most are civilian bulldozers modified by addition of vehicle armor/military equipment, but some are tanks stripped of armament and fitted with a dozer blade. Some tanks (called tankdozers) have bulldozer blades while retaining their armament, but this does not make them armored bulldozers as such, because combat remains the primary role — earth moving is a secondary task.
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.
The bulldozers were produced in preparation for the Battle of Normandy with the tasks of clearing the invasion beaches of obstacles and quickly making roads accessible by clearing rubble and filling in bomb craters.
As Allied armies advanced through Europe, the armored bulldozer was found to be too slow—there was a need for well-armored, obstacle clearing vehicle that was fast enough to keep up with tank formations. This need was met by the Centaur Bulldozer—a Centaur tank with the turret removed and a bulldozer blade fitted. Centaur bulldozers were still in use with the British Army at the time of the Korean War.
Modern armored bulldozers are often based on the Caterpillar D7 and D9. The attributes that make the D9 popular for major construction projects make it desirable for military applications as well. It has been particularly effective for the Israel Defense Forces (IDF) and for the United States armed forces (the Marine Corps and the US Army) and the Canadian Army in Iraq, both using an armor kit developed and manufactured by Israel.
Official source
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