As Britain prepared for war in the late 1930s, the military weren"t just desperately in need of vast numbers of aircraft, tanks and guns, they also needed many thousands of trucks and general utility vehicles to support all kinds of operations. 
The ability to effectively supply modern, mechanized armies with the huge amounts of fuel, ammunition, food and other commodities they would need was crucial to the success of any military campaign and as the speed of war increased, so these supply lines began to lengthen. Rugged, reliable and adaptable, these trucks would have a vital role to play in the coming conflict.