American Civil War course of four years. Intense combat left 620,000 to 750,000 people dead, more than the number of U.S. military deaths in all other wars combined. The war ended when General Robert E. Lee surrendered to General Ulysses S. Grant at the Battle of Appomattox Court House. Confederate generals throughout the southern states followed suit. Much of the South's infrastructure was destroyed, especially the transportation systems. The Confederacy collapsed, slavery was abolished, and four million black slaves were freed. During the Reconstruction Era that followed the war, national unity was slowly restored, the national government expanded its power, and civil rights
Rifles in the American Civil War in the war (April 1865) and likely was never used in action. However, it established the single-shot metallic cartridge breechloader as a standard infantry weapon, which eventually all modern armies adopted in one form or another. The US adopted the breechloading 1866 Springfield "Trapdoor" infantry rifle built from surplus rifle-musket parts after the war. The new repeater rifles would see fairly limited use in the Civil War. The first such weapon used by the US Army was the Model 1855 Colt Revolving Rifle (and a companion carbine), but it had a serious defect in that the gun would sometimes discharge