Designed as a general load and troop carrier with 157in wheelbase, the early production samples, like with most British trucks, had 34x7 dual rear tires instead of the later 10.50-16 single rears.
With over 70,000 samples produced, the OYDs and QLs gained a similar importance to the British as the 2½-ton "Deuce-and-a-half" to the American Army.