War The consequent American Civil War, beginning in 1861, led to the end of chattel slavery in America. Not long after the war broke out, through a legal maneuver by Union General Benjamin F. Butler, a lawyer by profession, slaves who fled to Union lines were considered "contraband of war". General Butler ruled that they were not subject to return to Confederate owners as they had been before the war. "Lincoln and his Cabinet discussed the issue on May 30 and decided to support Butler's stance". Soon word spread, and many slaves sought refuge in Union territory, desiring to be declared "contraband". Many of the "contrabands" joined the Union Army as workers or troops, forming entire regiments of the U.S. Colored Troops. Others went to refugee camps such as the Grand Contraband Camp near Fort Monroe or fled to northern cities. General Butler's interpretation was reinforced when Congress passed the Confiscation Act of 1861, which declared that any property used by the Confederate military, including slaves, could be confiscated by Union forces. At the beginning of the war, some Union commanders thought they were supposed to return escaped slaves to their masters. By 1862, when it became clear that this would be a long war, the question of what to do about slavery became more general. The Southern economy and military effort depended on slave labor. It began to seem unreasonable to protect slavery while blockading Southern commerce and destroying Southern production. As Congressman George W. Julian of Indiana put it in an 1862 speech in Congress, the slaves "cannot be neutral. As laborers, if not as soldiers, they will be allies of the rebels, or of the Union." Julian and his fellow Radical Republicans put pressure on Lincoln to rapidly emancipate the slaves, whereas moderate Republicans came to accept gradual, compensated emancipation and colonization. Copperheads, the border states and War Democrats opposed emancipation, although the border states and War Democrats eventually accepted it as part of total war needed to save the Union. Emancipation Proclamation The Emancipation Proclamation was an executive order issued by President Abraham Lincoln on January 1, 1863. In a single stroke it changed the legal status, as recognized by the U.S. government, of three million slaves in designated areas of the Confederacy from "slave" to "free". It had the practical effect that as soon as a slave escaped the control of the Confederate government, by