Forever Free January 1, 1863 January 1, 2010 December 18, 1865 Slavery abolished in America That day--January 1, 1863--President Lincoln formally issued the Emancipation Proclamation, calling on the Union army to liberate all slaves in states still in rebellion as "an act of justice, warranted by the Constitution, upon military necessity." These three million slaves were declared to be "then, thenceforward, and forever free." The proclamation exempted the border slave states that remained in the Union and all or parts of three Confederate states controlled by the Union army. The Emancipation Proclamation transformed the Civil War from a war against secession into a war for "a new birth of freedom," as Lincoln stated in his Gettysburg Address in 1863. This ideological change discouraged the intervention of France or England on the Confederacy's behalf and enabled the Union to enlist the 180,000 African American soldiers and sailors who volunteered to fight between January 1, 1863, and the conclusion of the war. December 18, 1865 Slavery abolished in America That day--January 1,1863--President Lincoln formally issued the Emancipation Proclamation, calling on the Union army to liberate all slaves in states still in rebellion as "an act of justice, warranted by the Constitution, upon military necessity." These three million slaves were declared to be "then, thenceforward, and forever free." The proclamation exempted the border slave states that remained in the Union and all or parts of three Confederate states controlled by the Union army. The Emancipation Proclamation transformed the Civil War from a war against secession into a war for "a new birth of freedom," as Lincoln stated in his Gettysburg Address in 1863. This ideological change discouraged the intervention of France or England on the Confederacy's behalf and enabled the Union to enlist the 180,000 African American soldiers and sailors who volunteered to fight between January 1, 1863, and the conclusion of the war.