Steam Tractors the Power Behind First Motorized Armored Vehicles

Used to haul road trains of supply wagons, steam tractors became the first motorized armored vehicles

| November/December 2001

  • The armored steam traction engine for the Fowler armored road train
    The armored steam traction engine for the Fowler armored road train. Note the crewman inside the armored cab and the winch cable guide on the lower left side.
  • An unarmored commerical Fowler road train of 1899
    An unarmored commerical Fowler road train of 1899. Note both the steam traction engine and all three wagons are sprung. This type was used to haul supplies during the Boer War.
  • The Fowler armored road train of 1900
    The Fowler armored road train of 1900. Note the two 6-inch field howitzers hitched to it. The steam traction engine and wagons are all modified commercial units.
  • An armored wagon for the Fowler armored road train with its rear doors open
    An armored wagon for the Fowler armored road train with its rear doors open, showing a light 6-inch howitzer loaded in it. Note one of the wagon's rifle ports on the left side. 

  • The armored steam traction engine for the Fowler armored road train
  • An unarmored commerical Fowler road train of 1899
  • The Fowler armored road train of 1900
  • An armored wagon for the Fowler armored road train with its rear doors open

It should surprise nobody that a steam traction engine (steam tractor) was the basis for the first motorized armored vehicle used in combat. The first steam tractors had been built in the 1850s, and, after the American Civil War, their use proliferated.

In the 1870s many of the world's armies experimented with steam tractors, using them to pull road trains of supply wagons. Their speed was never more than 10 miles per hour, but that was three times the speed of animal-drawn supply wagons.

The British were among the largest builders and users of steam traction engines. They found them useful in many places in the empire, particularly in the vast arid lands such as Africa and Australia. When the Boer War broke out in 1899 both the British and the Boers immediately began using available steam tractors. The British Army immediately bought some for military use and sent them to South Africa.

These steam tractors were used to haul road trains of supply wagons to places not served by railroads. Boer troops began attacking them and the British had to divert troops to defend them.



In 1899, in cooperation with the British Army, the steam traction engine builder John Fowler and Company of Leeds, England, designed and built a special armored steam traction engine road train for use in South Africa. It was pulled by a 20 HP steam tractor fitted with an armored shell to protect its crew and working parts. It weighed some 15 tons complete with armor. The steam tractor incorporated sprung wheels so it could run as fast as 10 miles per hour on an improved level road and about half that on a level unimproved road or across level fields. It had no rough-country, off-road capability. Its operation was limited by the need to supply it with boiler water and coal fuel.

The Fowler armored road train shipped to South Africa had three armored and sprung wagons used to carry either troops, cargo or even artillery up to light six-inch field howitzer. The armor proved resistant to fire from the Boer's Mauser rifles, and shrapnel balls and fragments from artillery projectiles.



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