Jeep is ready to do its duty once again, with a new military version of the Wrangler 4x4.The iconic Jeep made its name in the Second World War. It made its debut in 1941, but in recent years other purpose-built machines have taken the lead on the battlefield.Now the new Wrangler J8 is hoping to head back into military service. Based on the new five-door Wrangler Unlimited, the J8 has been specially modified for military and civilian government use.The car's frame has been reinforced for increased ruggedness and to allow greater payloads of up to 1339kg. The axles, brakes and suspension have also been upgraded for durability, including the rear leaf springs.Power comes from a 158bhp, 295lb ft 2.8-litre four-cylinder turbodiesel engine mated to a five-speed auto. A special air-intake system with filtration and a bonnet-mounted snorkel allow the J8 to wade in water up to 762mm deep and to tackle sandstorm conditions for up to five hours. Assuming the occupants are as hardy as the car, that is.The J8 will be available as a two-door with extended cargo area, and a five-door, and in either right-hand- or left-hand-drive.Jeep says that the J8 isn't designed for the front line, but is "fully armour capable". Towing eyes on the bumpers also allow it to be dropped in by helicopter.