4 · Society, Civilization, Culture
45 · warfare; military affairs
45C · (military) equipment and supply
45C1 · weapons
45C16 · firearms
45C16(...) · firearms (with NAME)
45C16(CANNON) · firearms: cannon
45C16(CANNON)(+2) · firearms: cannon (+ land forces)
45C16(CANNON)(+21) · firearms: cannon (+ infantry)