Confederate General Robert E. Lee issued his Farewell Address, also known as General Order No. 9 (sometimes Orders) to his Army of Northern Virginia on April 10, 1865, the day after he surrendered the army to Lt. Gen. Ulysses S. Grant. Lee's surrender was instrumental in bringing about the end of the American Civil War. The text of the order, which were written and drafted by Col. Charles Marshall, edited and finalized by Lee, were issued as follows:

Headquarters, Army of Northern Virginia, 10th April 1865.General Order

No. 9

After four years of arduous service marked by unsurpassed courage and fortitude, the Army of Northern Virginia has been compelled to yield to overwhelming numbers and resources.

I need not tell the survivors of so many hard fought battles, who have remained steadfast to the last, that I have consented to the result from no distrust of them.

But feeling that valour and devotion could accomplish nothing that could compensate for the loss that must have attended the continuance of the contest, I have determined to avoid the useless sacrifice of those whose past services have endeared them to their countrymen.

By the terms of the agreement, officers and men can return to their homes and remain until exchanged. You will take with you the satisfaction that proceeds from the consciousness of duty faithfully performed, and I earnestly pray that a merciful God will extend to you his blessing and protection.

With an unceasing admiration of your constancy and devotion to your Country, and a grateful remembrance of your kind and generous consideration for myself, I bid you an affectionate farewell.

The following is taken from a letter dated September 27, 1887, to General Bradley T. Johnson from Colonel Charles Marshall, CSA.

General Lee's order to the Army of Northern Virginia at Appomattox Court House was written the day after the meeting at McLean's house, at which the terms of the surrender were agreed upon. That night the general sat with several of us at a fire in front of his tent, and after some conversation about the army, and the events of the day, in which his feelings toward his men were strongly expressed, he told me to prepare an order to the troops.

The next day it was raining, and many persons were coming and going, so that I was unable to write without interruption until about 10 o'clock, when General Lee, finding that the order had not been prepared, directed me to get into his ambulance, which stood near his tent, and placed an orderly to prevent any one from approaching me.

I sat in the ambulance until I had written the order, the first draft of which (in pencil) contained an entire paragraph that was omitted by General Lee's direction. He made one or two verbal changes, and I then made a copy of the order as corrected, and gave it to one of the clerks in the adjutant-general's office to write in ink. I took the copy, when made by the clerk, to the general, who signed it, and other copies were then made for transmission to the corps commanders and the staff of the army. All these copies were signed by the general, and a good many persons sent other copies which they had made or procured, and obtained his signature. In this way many copies of the order had the general's name signed as if they were originals, some of which I have seen.

The American Civil War (April 12, 1861 – May 9, 1865; also known by other names) was a civil war in the United States between the Union (states that remained loyal to the federal union, or "the North") and the Confederacy (states that voted to secede, or "the South"). The central cause of the war was the status of slavery, especially the expansion of slavery into territories acquired as a result of the Louisiana Purchase and the Mexican–American War. On the eve of the Civil War in 1860, four million of the 32 million Americans (~13%) were enslaved black people, almost all in the South.The practice of slavery in the United States was one of the key political issues of the 19th century. Decades of political unrest over slavery led up to the Civil War. Disunion came after Abraham Lincoln won the 1860 United States presidential election on an anti-slavery expansion platform. An initial seven southern slave states declared their secession from the country to form the Confederacy. Confederate forces seized federal forts within territory they claimed. The last-minute Crittenden Compromise tried to avert conflict but failed; both sides prepared for war. Fighting broke out in April 1861 when the Confederate army began the Battle of Fort Sumter in South Carolina, just over a month after the first inauguration of Abraham Lincoln. The Confederacy grew to control at least a majority of territory in eleven states (out of the 34 U.S. states in February 1861), and asserted claims to two more. Both sides raised large volunteer and conscription armies. Four years of intense combat, mostly in the South, ensued.

During 1861–1862 in the war's Western Theater, the Union made significant permanent gains—though in the war's Eastern Theater the conflict was inconclusive. On January 1, 1863, Lincoln issued the Emancipation Proclamation, which made ending slavery a war goal, declaring all persons held as slaves in states in rebellion "forever free." To the west, the Union destroyed the Confederate river navy by the summer of 1862, then much of its western armies, and seized New Orleans. The successful 1863 Union siege of Vicksburg split the Confederacy in two at the Mississippi River. In 1863, Confederate General Robert E. Lee's incursion north ended at the Battle of Gettysburg. Western successes led to General Ulysses S. Grant's command of all Union armies in 1864. Inflicting an ever-tightening naval blockade of Confederate ports, the Union marshaled resources and manpower to attack the Confederacy from all directions. This led to the fall of Atlanta in 1864 to Union General William Tecumseh Sherman and his march to the sea. The last significant battles raged around the ten-month Siege of Petersburg, gateway to the Confederate capital of Richmond.

The Civil War effectively ended on April 9, 1865, when Confederate General Lee surrendered to Union General Grant at the Battle of Appomattox Court House, after Lee had abandoned Petersburg and Richmond. Confederate generals throughout the Confederate army followed suit. The conclusion of the American Civil War lacks a clean end date: land forces continued surrendering until June 23. By the end of the war, much of the South's infrastructure was destroyed, especially its railroads. The Confederacy collapsed, slavery was abolished, and four million enslaved black people were freed. The war-torn nation then entered the Reconstruction era in a partially successful attempt to rebuild the country and grant civil rights to freed slaves.

The Civil War is one of the most studied and written about episodes in the history of the United States. It remains the subject of cultural and historiographical debate. Of particular interest is the persisting myth of the Lost Cause of the Confederacy. The American Civil War was among the earliest to use industrial warfare. Railroads, the telegraph, steamships, the ironclad warship, and mass-produced weapons saw wide use. In total the war left between 620,000 and 750,000 soldiers dead, along with an undetermined number of civilian casualties. President Lincoln was assassinated just five days after Lee's surrender. The Civil War remains the deadliest military conflict in American history. The technology and brutality of the Civil War foreshadowed the coming World Wars.