303 Maxim Guns 303 Inch Vickers machine gun / by command of the Army Council, War Office employment of machine guns : Organization and direction of fire / General Staff Carriage of artillery equipment by air : Gun, machine, polsten 20 mm Mark 1 on mounting universal 20 mm gun no. 2, Mark 1 in … training regulations Weapons / War Department : Browning machine gun, caliber .30, model of 1917 / War Department Small arms training : Training / War Office. Army Council. Vol. I. Pamphlet no. 7: .303-inch machine gun Equipment scales : For guns, machine, Bren .303-inch, Mks. I and II : issued by technical scale and S.R. section, M.G.O. branch, G.H.Q (I) Army extension courses. Special text : Machine guns / prep. under the dir. of the Chief of Cavalry for use with the Extension Course of … war department technical manual 75-MM gun and carriage, M 1917 and modifications / prepared under direction of the chief of ordnance field manual 37-mm Gun : M1916 : FM 23-75 field manual Seacoast artillery : service of the piece : 8-inch Gun, railway artillery war department technical manual 20-MM automatic gun M3 / War Department