in a ball mounting in the front of that armoured box. Two radio sets were fitted: a short range set for tactical communication and a long range one to contact higher levels. The Box tank was first used by a battalion commander and from 1931 by the Brigade Commander. Medium Mark II* Special: in 1929 four vehicles were built for Australia with the coaxial machine gun to the left of the main gun and an additional Vickers machine gun in the right side of the turret. Medium Mark II* Command Tank: in 1931 another command tank was created for the Tank Brigade by replacing the main armament by a dummy gun, fixing the turret in place and fitting an additional wireless set in the space thus gained. English Workman: the nickname given by the Russians to 15 (or 16) Vickers Medium Mk.IIs purchased in 1931. This variant had no cupola, less pronounced turret bevels, and cowled ventilation fans on the hull sides. About half a dozen were found without engines or guns by Finnish forces near Vitele in autumn 1941 during the Continuation War. Birch gun: three prototypes built between 1926 and 1929 of a self-propelled gun for the experiments then conducted in the field of mechanised warfare. The Mark I had the Ordnance QF 18 pounder, The Mark II chassis was lengthened and fitted with a 75 mm gun on a mounting capable of high elevations. Surviving vehicles Three Vickers Medium Mark II tanks have survived around the world. E1949.330 is preserved at The Tank Museum in Dorset, England. A Vehicle has survived at the U.S. Army Center for Military History Storage Facility, Anniston, Alabama (USA). A vehicle has survived at the Royal Australian Armoured Corps Tank Museum, Puckapunyal, Victoria Australia. See also Vickers Medium Mark I Medium Mark III Notes References External links The Vickers Medium Tank Medium Mark II Tanks of the United Kingdom Medium tanks of the United Kingdom Interwar tanks of the United Kingdom World War II tanks of the United Kingdom Medium tanks History of the tank Military vehicles introduced in the 1920s