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Battle of Gettysburg
July 1–3, 1863· Battle· Americas
Well documentedSolid records, physical evidence or scientific consensus.
The Civil War's largest battle, where George Meade's Union army turned back Lee's invasion of Pennsylvania.
See it on the Battles & Wars map →What happened
Lee invaded Pennsylvania hoping a victory on Northern soil would break the Union's will. His army of about 75,000 met Meade's roughly 94,000 at the crossroads town of Gettysburg. On day one the Confederates drove the Union onto high ground south of town. On day two they attacked both flanks, including Little Round Top, without breaking through. On day three about 12,500 men in Pickett's Charge crossed open fields and were shattered. Casualties totaled about 46,000–51,000 killed, wounded, captured or missing.
Why it matters
Lee never again invaded the North. With Vicksburg's fall the next day, momentum shifted to the Union, and Lincoln's Gettysburg Address recast the war's purpose.
How we know
Both armies' reports in the Official Records, letters and diaries, photographs taken days later, and the preserved battlefield with over 1,300 monuments, managed by the National Park Service.
Still debated
Whether it was truly 'the' turning point is debated, as is the blame Lost Cause writers heaped on Longstreet's delays and Jeb Stuart's absent cavalry.
Connections (4)
▸Railways, rifled muskets and the telegraph made frontal assaults deadly, as at Battle of GettysburgWell documented
The connection
On July 3, 1863, about 12,500 Confederates in Pickett's Charge advanced nearly a mile across open fields toward Cemetery Ridge. Rifled cannon struck them at long range, then canister and massed rifle fire from behind a stone wall. More than half became casualties within about an hour. Rifled weapons had made such open assaults ruinous.
When and how
Gettysburg, Pennsylvania, afternoon of July 3, 1863: divisions under George Pickett, James Pettigrew and Isaac Trimble against Winfield Hancock's Union Second Corps.
How we know
Casualty returns and eyewitness accounts from both armies; the open ground can still be walked, showing how exposed the attackers were.
Debates and open questions
Much of the damage came from artillery and short-range fire, so how much rifles' extra range mattered here is debated, echoing Paddy Griffith's argument.
▸Battle of Gettysburg was a major turning point of American Civil WarMostly agreed
The connection
Lee lost roughly a third of his army and never again invaded the North. Coming a day before Vicksburg surrendered on July 4, 1863, the victory lifted Northern morale, weakened the push for a negotiated peace, and made European recognition of the Confederacy even less likely. Lincoln's November address there recast the war as a 'new birth of freedom'.
When and how
Gettysburg, Pennsylvania, July 1–3, 1863; Vicksburg, Mississippi, July 4, 1863; Lincoln's Gettysburg Address, November 19, 1863.
How sure are we?
Casualty returns, Northern newspapers and diaries showing the morale shift, and Lee's own report and his offer to resign in August 1863.
Debates and open questions
Many historians argue Vicksburg, or Atlanta's fall in 1864, mattered more; the war ran almost two more years after Gettysburg.
▸Robert E. Lee invaded the North and was turned back at Battle of GettysburgWell documented
The connection
After winning at Chancellorsville in May 1863, Lee marched north through Maryland into Pennsylvania, hoping to win on Union soil, gather supplies and boost the North's peace movement. At Gettysburg his attacks on July 2 and 3 failed, and he retreated to Virginia. A British observer recorded him telling survivors: 'It is I that have lost this fight.'
When and how
Pennsylvania, June–July 1863: Lee's Army of Northern Virginia, about 75,000 men, against George Meade's Army of the Potomac.
How we know
Lee's battle report and letters, the diary of British observer Arthur Fremantle, and memoirs of Confederate officers.
Debates and open questions
Why Lee ordered Pickett's Charge against the strong Union center is still debated, as is Longstreet's advice to swing around the Union flank instead.
▸Battle of Antietam ended Lee's first northern invasion, before Battle of GettysburgWell documented
The connection
Antietam turned back Lee's first invasion of the North. After victories at Fredericksburg and Chancellorsville he tried again in summer 1863, reaching Pennsylvania, and was defeated at Gettysburg. Both campaigns aimed at Northern war-weariness and foreign support, and after both, Lincoln criticized his commander for letting Lee escape across the Potomac.
When and how
Maryland, September 1862, and Pennsylvania, July 1863; Lee against McClellan, then against George Meade.
How we know
Both campaigns are fully documented in the Official Records and Lincoln's letters; the comparison is standard among historians.
Debates and open questions
Whether Lee's invasions were sound strategy, or wasted men the Confederacy could not replace, is one of the war's long-running debates.