British Army equipment exhibition 1980 : mobility and firepower demonstration, 26 June 1980 / Royal armoured corps centre War equipment table for headquarters of a light anti-aircraft regiment, RA (Mobile), 1942 : (to command 3 light anti-aircraft batteries) Artillery training : Engagement of ground and sea targets by mobile heavy anti-aircraft artillery / War Office. Vol IV / War Office. Part I: A.A. … Identification list for ordnance, S.B. 4.2-inch mortar mark 2 on mounting, 4.2 inch S.B.mortar mark 3 also plate, base, mobile 4.2-inch s.b. mortar, mark 1