On September 22, 1862, President Abraham Lincoln issued the Preliminary Emancipation Proclamation, a landmark proclamation that set the stage for one of the most important moral and legal shifts in United States history. By this proclamation, Lincoln declared that as of January 1, 1863, all persons held as slaves in states or parts of states that were then in rebellion against the United States would be “then, thenceforward, and forever free.”
The document opens by framing the Civil War as not only a struggle to preserve the Union, but also to restore the “constitutional relation” between the United States and those states whose loyalty had been suspended or disturbed. It promises that when Congress next convenes, measures will be recommended to offer financial aid to those slave states not in rebellion, to support either gradual or immediate abolition of slavery—if those states voluntarily agree. It also reaffirms Lincoln’s willingness to continue colonization efforts—that is, voluntary emigration of African Americans with their consent—to other parts of the continent or elsewhere, subject to governmental consent wherever applicable.
Importantly, the proclamation ties emancipation to military authority and Rebel territory. It states that on January 1, 1863, the executive government will recognize the freedom of enslaved people in rebellious states and will “do no act or acts to repress such persons … in any efforts they may make for their actual freedom.” The document also directs that it will designate by proclamation which states, or parts of states, are in rebellion, and that states which by that date are in good standing—represented in Congress by members elected by a majority of qualified voters—will be presumed not to be in rebellion absent strong contrary evidence.
Lincoln’s preliminary proclamation references existing legislation, including an act of Congress (March 13, 1862), prohibiting returning escaped people from slavery who reach U.S. military lines. Portions of another act passed July 17, 1862, which make clear that slaves who escape to Union lines, or whose masters are in rebellion, or who are in territory occupied by Union forces, “shall be deemed captives of war” and hence free.
As a conditional and strategic step, the Preliminary Emancipation did not immediately free all enslaved people, but it sent a powerful message: emancipation was now an explicit war aim of the Union, not merely an ancillary moral issue. It laid crucial groundwork for the final Emancipation Proclamation, solidified the moral cause of the Union, and shifted both domestic and international perceptions of the Civil War. Above all, it marked a turning point: the fight for the Union became inseparable from the fight for freedom.
