The FV432 is the armoured personnel carrier variant in the British Army's FV430 series of armoured fighting vehicles. Since its introduction in the 1960s, it has been the most common variant, being used for transporting infantry on the battlefield. At its peak in the 1980s, almost 2,500 vehicles were in use. Although the FV432 was to have been phased out of service in favour of newer vehicles such as the Warrior and CVR(T), 500 were upgraded to extend their service into the 2020s. In light of the army's need for additional armoured vehicles in the Afghan and Iraqi theatres, the Ministry of Defence announced in August 2006 that an extra 70 vehicles would be upgraded by BAE Systems in addition to the 54 already ordered as part of their "force protection initiative". The improvements take the form of an engine upgrade, a new steering unit and a new braking system, as well as improvement in armour protection to a level similar to that of the Warrior. In addition, plates lined with Kevlar have been added to the bottom hull to provide better protection against improvised explosive devices. It is intended that these FV432s will free up the Warrior vehicles for provision of reserve firepower status and/or rotation out of theatre. The updated version is called the Bulldog. History The FV432 was designed to be the armoured personnel carrier in the FV430 series. Production started in 1962 by GKN Sankey and ended in 1971, after constructing approximately 3,000 vehicles. The FV432 is of all-steel construction. The chassis is a conventional tracked design with the engine at the front and the driving position to the right. Directly behind the driver's position is the vehicle commander's hatch. There is a large round opening in the passenger compartment roof, which has a split/folding (concertina) hatch, and a (right hand) side-hinged door in the rear for loading and unloading. As in many designs of its era, there are no firing ports for the troops carried – British Army doctrine having been for troops to dismount from vehicles to fight, unlike Russian infantry fighting vehicles that largely incorporate ports. The passenger compartment has five seats on either side – these fold up to provide a flat cargo space. An NBC (nuclear, biological, and chemical weapons) system is fitted, normal ventilation provided by a fan mounted in the forward right hand side of the vehicle, air being