1861-1865 - American Civil War. Both breech and muzzle loaded guns used. 1862 - The Gatling Gun is invented. 1869 - Center-fire cartridge introduced. 1870-1871- The Franco-German War. Breach ...
He developed the Gatling Gun, an early machine gun. It was patented in 1862. Gatling went on to found the Gatling Gun Company ...