Between December 1971 and June 1972, two specially-equipped Range Rovers completed the TransAmerica expedition from Anchorage in Alaska to Cape Horn in South America.

The most gruelling part of the journey was the passage through the Darien Isthmus, between Panama City and Colombia - a mere 100 miles of the total 17,084, but it took four of the seven months.

The teams on this MoD expedition were drawn from the 17th/21st Lancers, Royal Engineers, Royal Artillery, Royal Signals, Infantry, Army Air Corps and Royal Electrical and Mechanical Engineers of the British Army.

The Range Rovers were mechanically standard, but fitted with swamp tyres, petrol tank guards, snorkel exhaust pipe extensions, Fairey winches and roll-over bars.