The AC-130 is the world's biggest flying artillery gunship - nicknamed 'Hell in the Sky.' With three side-firing weapons, a 25mm gatling gun, a 40mm Bofors cannon, and a 105mm howitzer, it's easy to see why it got its name. Air Warriors: AC-130 airs tonight at 8 PM. | Smithsonian Channel Aviation Nation

The Napoleon 1857 was considered the deadliest cannon of the Civil War due to its accuracy and force. Watch this demonstration of its power in an empty field. 🎥The Weapon Hunter | Smithsonian Channel Aviation Nation