American Civil War

Confederate States of America (Confederacy)

The American Civil War (1861–1865) was a major war between the United States (the "Union") and eleven Southern states which declared that they had a right to secession and formed the Confederate States of America, led by President Jefferson Davis. The Union, led by President Abraham Lincoln and the Republican Party, which had opposed the expansion of slavery into territories owned by the United States, rejected any right of secession. Fighting commenced on April 12, 1861, when Confederate forces attacked a United States (federal) military installation at Fort Sumter in South Carolina, the first state to secede.

During the first year, the Union assumed control of the border states and established a naval blockade as both sides raised large armies. In 1862 large, bloody battles such as Shiloh and Antietam were fought, causing massive casualties unprecedented in U.S. military history largely as a result of incompatibility between new weapons and old battlefield tactics. In September 1862, Lincoln's Emancipation Proclamation made the freeing of slaves in the South a war goal and gave a higher moral cause to the war, despite opposition from northern Copperheads who tolerated secession and slavery. Emancipation reduced the likelihood of intervention from Britain and France on behalf of the Confederacy. In addition, the goal also allowed the Union to recruit African-Americans for reinforcements, a resource that the Confederacy did not dare exploit until it was too late. The border states and War Democrats reluctantly accepted emancipation as part of total war needed to save the Union. European immigrants joined the Union Army in large numbers too. 23.4% of all Union soldiers were German-Americans; about 216,000 were born in Germany. In the East, Confederate general Robert E. Lee assumed command of the Army of Northern Virginia and rolled up a series of victories over the Army of the Potomac, but his best general, Thomas Jonathan "Stonewall" Jackson, was killed at the Battle of Chancellorsville in May 1863. Lee's invasion of the North was repulsed at the Battle of Gettysburg in Pennsylvania in July 1863; he barely managed to escape back to Virginia. The Union Navy captured the port of New Orleans in 1862, and Ulysses S. Grant seized control of the Mississippi River by capturing Vicksburg, Mississippi in July 1863, thus splitting the Confederacy.

By 1864, long-term Union advantages in geography, manpower, industry, finance, political organization and transportation were overwhelming the Confederacy. Grant fought a number of bloody battles with Lee in Virginia in the summer of 1864. Lee's defensive tactics resulted in extremely high casualties for Grant's army, but Lee lost strategically overall as he could not replace his casualties and was forced to retreat into trenches around his capital, Richmond, Virginia. Meanwhile, General William Sherman, the leader of the Union Military Division of the Mississippi, captured Atlanta, Georgia during his March to the Sea, during which he destroyed a hundred-mile-wide swath of Georgia. In 1865, the Confederacy collapsed after Lee surrendered to Grant at Appomattox Court House; all slaves in the Confederacy were freed by the Emancipation Proclamation. Slaves in the border states and Union-controlled parts of the South were freed by state action or by the Thirteenth Amendment.

The full restoration of the Union was the work of a highly contentious postwar era known as Reconstruction. The war produced about 970,000 casualties (3% of the population), including approximately 620,000 soldier deaths—two-thirds by disease. The war accounted for more casualties than all other U.S. wars combined. The causes of the war, the reasons for its outcome, and even the name of the war itself are subjects of lingering controversy even today. The main results of the war were the restoration and strengthening of the Union (mainly by permanently ending the issue of secession), and the end of slavery in the United States. About 4 million black slaves were freed in 1865. Based on 1860 census figures, 8% of all white males aged 13 to 43 died in the war, including 6% in the North and an extraordinary 18% in the South.