ref no 2156 – 101 forward control
More info:
The vehicle was primarily produced to meet the Army’s requirement for a gun tractor, and was designed to tow a field gun (the L118 Light Gun) with a ton of ammunition and other equipment in the rear load space, giving it the alternative name of the Land Rover One Tonne.
The vehicle was designed to be easily transported by air; the positioning of the 3.5 litre Rover V8 engine beneath and to the rear of the cab eliminates the bonnet at the front, making the vehicle more or less cuboid thus reducing unused space in transport aircraft.
Reference: wikipedia.org