The vehicle was used in the North African Campaign from late 1941 by the 11th Hussars and other units. It was also widely used in the European theatre by reconnaissance regiments of British and Canadian infantry divisions. A few vehicles were used for patrol duty along the Iran supply route. A British Indian Army armoured car regiment, partly equipped with Humbers, served in the reconquest of Burma. Portugal received a number of Humber vehicles in 1943, most of them going to the Army, but with 20 going to the National Republican Guard. After the Second World War, the Humber was employed by Egypt in 1948–49 as well as by Burma, Ceylon, Cyprus, Denmark, India, Mexico and the Netherlands.