Ключевые слова: aiming, anti aircraft, antiaircraft, army, artillery, barrel, battle, cannon, clouds, combat, conflict, danger, defence works, defense, dutch, equipment, eroded, europe, force, fort pampus, grass, grass field, great war, gun, heavy, historic, history, holland, machine, meadow, military, muiden, netherlands, old, outdoor, outdoors, retro, rusty, sky, special, vintage, warfare, weapon, weapons, weathering, world, world war 1, world war i, world war one, ww1,