On July 1, 1863, the Battle of Gettysburg commenced near the town of Gettysburg, Pennsylvania. The fighting arose when Confederate forces advancing into the Shenandoah Valley encountered Union cavalry west of town. What began as a skirmish rapidly escalated as both sides reinforced, culminating in a full day of combat that ended with the Union retreating to Cemetery Hill. This opening day set the stage for the subsequent two days of intense warfare, defining the battle’s geography, stakes, and ultimate legacy.
Key Details at a Glance
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Start Date | July 1, 1863 | Historical records |
| Location | Gettysburg, Pennsylvania and surrounding areas | Military reports |
| Primary Commanders | Union: General George G. Meade (Army of the Potomac); Confederate: General Robert E. Lee (Army of Northern Virginia) | Official records |
| Duration | Three days (July 1–3, 1863) | Historical consensus |
| Outcome | Union defensive victory; Confederate retreat | Post-battle analysis |
The Opening Morning: July 1, 1863
Initial Conflicts and Escalation
The battle began when Union cavalry under Brigadier General John Buford arrived west of Gettysburg on the morning of July 1. Buford’s mission was to slow the Confederate advance until Union infantry could reach the crossroads town. As Confederate Major General Henry Heth’s division approached, what started as a delaying action turned into a serious engagement. By mid-morning, additional Confederate units joined the fight, and Union infantry from the I and XI Corps arrived to stabilize the line.
Key Developments in the First Day
- Early morning: Confederate forces encountered Union vedettes and pushed toward Gettysburg.
- Morning to early afternoon: Union cavalry and first infantry units engaged, buying time for reinforcements.
- Afternoon: The Union line extended north through town to Cemetery Hill, forming a defensive position.
- Evening: With Union troops entrenched on high ground, Lee ordered Ewell’s Corps to pursue, though fighting ended for the day.
By nightfall on July 1, more than 15,000 soldiers from both sides had been engaged. The Union hold on Cemetery Hill preserved the Army of the Potomac’s ability to defend the region, while the Confederates controlled parts of the town. This first day established the essential conditions for the next two days of fighting.
The Second and Third Days: Context and Impact
July 2, 1863
On the second day, both armies brought the full weight of their remaining forces into the fight. The Union extended its line along Cemetery Ridge and Culp’s Hill, while the Confederates attacked the left and right Union flanks. Fierce fighting at locations such as Little Round Top and the Peach Orchard resulted in heavy casualties but failed to break the Union center. The day ended with neither side gaining a decisive advantage.
July 3, 1863
July 3 is most closely associated with Pickett’s Charge, a massive assault across open ground against Union positions on Cemetery Ridge. After an intense artillery bombardment, thousands of Confederate troops advanced but were repulsed with severe losses. That evening, Lee ordered a withdrawal of the Army of Northern Virginia, effectively concluding the three-day battle.
Why the Start Date Matters
Understanding that the Battle of Gettysburg began on July 1 is essential for grasping how the engagement unfolded. The initial encounter near the town shaped the strategic landscape, forcing Lee to commit to a battle he had not intended to fight at that time and place. The Union’s ability to secure high ground on the first day directly influenced the outcome of the larger three-day confrontation.
Common Misconceptions
- July 3 is the start of the battle: July 3 marks the climax (Pickett’s Charge), not the beginning.
- The battle was planned in advance: Lee did not initially intend a major engagement at Gettysburg; it evolved from a foraging mission and encounter with Union cavalry.
- It was a single-day fight: The battle spanned three days, with each day contributing to the overall Union defensive victory.
Conclusion
The Battle of Gettysburg commenced on July 1, 1863, when Union cavalry clashed with Confederate forces west of the town. The first day’s fighting established key terrain and set the conditions for the larger struggle that followed. As the opening chapter of a three-day turning point in the Civil War, July 1 remains foundational to understanding why Gettysburg endures as a defining moment in American history.