Example image of eyePlorer eyePlorer map for 'Autocannon': Bullet Machine gun Shell (projectile) Weapon 20 mm caliber Caliber Artillery Field gun Rate of fire Armor-piercing shot and shell Armour-piercing discarding sabot RARDEN Akbar the Great Fathullah Shirazi History of India Mughal Empire Persian people Polymath Ancient Greece Barrel China Hand cannon Polybolos Repeating crossbow 18th century James Puckle London Flintlock Musket Volley gun Primer Smokeless powder QF 1 pounder pom-pom Maxim gun Rifle Anti-aircraft warfare World War I Zeppelin QF 2 pounder naval gun World War II Biplane Monoplane Bofors 40 mm Oerlikon 20 mm cannon Battle of France Invasion of Poland (1939) Panzer II Armored car (military) Ground-attack aircraft Vickers S