Battle cannons are large artillery pieces designed to fire projectiles over long distances during warfare. They were commonly used from the 15th to the 19th centuries and played a significant role in many historical battles. These cannons could launch heavy cannonballs or explosive shells, causing significant damage to enemy fortifications and troops. The design of battle cannons evolved over time, with advancements in materials and technology leading to more powerful and accurate weapons. Notable examples include the Napoleonic cannons used during the Napoleonic Wars and the Civil War cannons employed in the American Civil War, which showcased their effectiveness on the battlefield.