against excessive movement of the hull on the chassis. For forward vision the driver had a flap in the front of the "cab" (which became part of the glacis from the Mark II onwards). When shut the view he was protected by a Triplex bullet proof glass block. These could be readily replaced if damaged. There were other flaps to the sides. In order to see to the rear there was a combination of a flap in the rear bulkhead between the fighting compartment and engine bay and a mechanism that raised the engine cover. The turret, armed with one 15mm and one 7.92mm Besa machine guns, was hand traversed. The vehicle commander acted as the wireless operator. Service history 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. The Humber armoured car was used in Burma Campaign by the 16th Light Cavalry, an Indian armoured car regiment, which formed part of Fourteenth Army troops. After Independence, an Indian Army regiment, 63rd Cavalry, was raised with Humber Mk IV armoured cars as one of its squadrons which was later hived off as an independent reconnaissance squadron and the integral squadron re-raised, the second time with Daimlers. The Humbers and Daimlers of the Indian Army formed the mounts of the President's Bodyguard and were deployed in the defense of Chushul at heights above 14,000 ft during the 1962 Indo-China War. The Humber was used against the Indian Army in 1948 by the 2nd and 4th Hyderabad Lancers, armoured car cavalry units of the Hyderabad State Forces, during Operation Polo. Humber armoured cars were employed during the Indian invasion of Goa in December 1961. These vehicles equipped the four reconnaissance squadrons of the Portuguese garrison in Goa. The Portuguese Humbers engaged the invading