The 1.59-inch breech-loading Vickers Q.F. gun, Mk II was a British light artillery piece designed during WorldWar I. Originally intended for use in trench
World WarII. In Naval use it was being replaced in the 1920s by the QF 4-inch (100 mm) Mk V on HA (high-angle) mounting. Britain entered WorldWar I with
Nevada in WorldWarII. Pennsylvania Military Museum, Boalsburg, Pennsylvania. 14-inch/50-caliber gun – later 14-inch gun (American) BL 14-inch Mk VII naval