NAPOLEON CANNON - Developed in France for Emperor Napoleon III in the 1850s, the bronze smoothbore 12-pounder became the most popular gun of the American Civil War. The Napoleon Cannon was light enough to be easily maneuverable and heavy enough to destroy field fortifications almost a mile away.
Firing solid shot, spherical case and canister, the Napoleon Cannon was also extremely versatile. By mid-1863 nearly 40% of all field artillery pieces of each army were Napoleons. The Union had over 1,000 Napoleon Cannons in its arsenal and the Confederacy over 600.