The Biggest Civil War Battles of 1863: Stones River, Chancellorsville, Gettysburg, Vicksburg, Chickamauga, and the Chattanooga Campaign

Americans have long been fascinated by the Civil War and its biggest battles, particularly Gettysburg, Antietam, and Shiloh, all of which involved Robert E. Lee or Ulysses S. Grant. But one of the 6 biggest battles of the war, and the one that took the heaviest toll by % on both armies was fought at the end of 1862 in Tennessee, and it involved neither of those generals.

In late December 1862, William Rosecrans’s Union Army of the Cumberland was contesting Middle Tennessee against Braxton Bragg’s Army of Tennessee, and for three days the two armies savaged each other as Bragg threw his army at Rosecrans in a series of desperate assaults. Bragg’s army was unable to dislodge the Union army, and he eventually withdrew his army after learning that Rosecrans was on the verge of receiving reinforcements. Though the battle was stalemated, the fact that the Union army was left in possession of the field allowed Rosecrans to declare victory and embarrassed Bragg.

Though Stones River is mostly overlooked as a Civil War battle today, it had a decisive impact on the war. The two armies had both suffered nearly 33% casualties, an astounding number in 1862 that also ensured Rosecrans would not start another offensive campaign in Tennessee until the following June.

Lee’s heavily outnumbered army won the most stunning victory of the war at Chancellorsville, but it cost them Stonewall Jackson. Moreover, the reorganization of the armies and the battle itself played an influential role in the way the Pennsylvania Campaign and the Battle of Gettysburg unfolded later that summer.

After the South had lost the war, the importance of Gettysburg as one of the “high tide” marks of the Confederacy became apparent to everyone, making the battle all the more important in the years after it had been fought. While former Confederate generals cast about for scapegoats, with various officers pointing fingers at Robert E. Lee, James Longstreet, and James Stuart, historians and avid Civil War fans became obsessed with studying and analyzing all the command decisions and army movements during the entire campaign. Despite the saturation of coverage, Americans refuse to grow tired of visiting the battlefield and reliving the biggest battle fought in North America.

At the start of 1863, Robert E. Lee’s Army of Northern Virginia had been frustrating the Union in the Eastern theater for several months, but the situation in the West was completely different. The Confederates had lost control of several important states throughout 1862, and after New Orleans was taken by the Union, the North controlled almost all of the Mississippi River, which Confederate general James Longstreet called “the lungs of the Confederacy”. By taking control of that vital river, the North would virtually cut the Confederacy in two, putting the South in a dire situation.

The only domino left to fall was the stronghold of Vicksburg, and both sides knew it. The Union Army of the Tennessee, led by Ulysses S. Grant, would spend months trying to encircle the army and eventually force John Pemberton’s Confederate army to surrender. Grant eventually succeeded on July 4, 1863, but since it came a day after the climactic finish of the Battle of Gettysburg, Vicksburg was (and still is) frequently overlooked as one of the turning points of the Civil War. In fact, had the Confederate’s military leadership listened to Longstreet, who advocated detaching soldiers from Lee’s army to head west and help the Confederates deal with Grant or Rosecrans in that theater, the Battle of Gettysburg might never have happened.

© 2025 Charles River Editors (E-bog): 9781475332698

Release date

E-bog: 2. maj 2025