The first armoured bulldozer was developed by the British during World War 2. This was a conventional Caterpillar D8 bulldozer fitted with armour 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 armoured vehicles that were collectively referred to as Hobart's Funnies and were operated by the British 79th Armoured Division. 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 armoured bulldozed was found to be too slow - there was a need for well-armoured, obstacle clearing vehicle that was fast enough to keep up with tank formations. This need was met by the Centaur Bulldozer - a Cromwell 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. The site below will give you more info.
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