The reason British troops needed local vehicles is that their helicopters were on the "Atlantic Conveyor" merchant ship, which the Argentines sunk. Since Briti

The reason British troops needed local vehicles is that their helicopters were on the "Atlantic Conveyor" merchant ship, which the Argentines sunk. Since British army doctrine is to insert away from the front, they had to march around 55 miles to Port Stanley. (The US does amphibious assaults near the objective, which is high-risk: either you succeed, or get slaughtered on the beach, as in Italy and a couple of the Normandy landings.)