How Many Deaths Occurred at the Battle of Vicksburg
The Battle of Vicksburg produced an estimated 19,233 total deaths, casualties, and missing soldiers across the siege and related operations from May 18 to July 4, 1863. Of these, approximately 1,667 Union soldiers were killed, about 6,000 were wounded, and nearly 29,000 men were captured or went missing, primarily during the surrender on July 4, 1863. Confederate forces suffered about 3,200 battle deaths, with an additional 4,000-plus captured. Disease played a significant role in non-battle deaths long before and after fighting. These figures are drawn on reports maintained by the Official Records and modern scholarly syntheses, including studies from the Civil War Trust and the National Park Service.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Total Engaged (Union) | ~77,000 | Official Records |
| Total Engaged (Confederate) | ~33,000 | Official Records |
| Union Killed | ~1,667 | NPS/CWSAC |
| Union Wounded | ~6,000 | NPS/CWSAC |
| Union Missing/Captured | ~29,000 | NPS/Siege Reports |
| Confederate Killed | ~3,200 | NPS/Correspondence |
| Confederate Captured | ~4,000+ | Parole/Surrender Records |
| Key Period | May 18–July 4, 1863 | Campaign Dates |
Context: Why Vicksburg Mattered
Vicksburg was a critical Confederate stronghold on the Mississippi River. Its surrender gave the Union complete control of the river, split the Confederacy in two, and set the stage for the March to the Sea. The prolonged siege highlighted challenges in siege warfare, logistics, and the pervasive threat of disease, which often caused more deaths than bullets. The campaign tested commanders on both sides and reshaped the political and military landscape of the Civil War.
Casualty Breakdown by Category
Casualty patterns at Vicksburg reflect the intensity of prolonged artillery bombardment, repeated assaults, and harsh conditions. The following comparison clarifies how deaths and other losses were distributed across combatants and phases.
- Union killed: approximately 1,667, primarily from bombardment and assault operations.
- Union wounded: roughly 6,000, with many evacuated via river transports and field hospitals.
- Union missing/captured: about 29,000, mostly during the surrender and subsequent paroling.
- Confederate killed: an estimated 3,200, reflecting the severe toll of siege warfare.
- Confederate captured: over 4,000, alongside tens of thousands of arms and substantial artillery.
Disease and Non-Battle Deaths
Before and after the main siege, disease was a leading cause of death. Malaria, dysentery, and typhoid spread rapidly in crowded camps and fortified positions with limited sanitation. While exact counts are difficult to isolate, historical analyses suggest that disease accounted for a significant share of the overall mortality beyond immediate battle losses. Poor water supplies, inadequate shelter, and the movement of large armies exacerbated health risks throughout the campaign.
Battle Timeline and Key Events
The engagement unfolded in phases, from initial maneuvers to the final surrender. Understanding the sequence helps explain where and why deaths clustered and how decisions shaped outcomes.
Approach and Positioning (Late April–May 1863)
Union forces under Major General Ulysses S. Grant moved down the west bank of the Mississippi, crossed the river south of Vicksburg, and established a foothold. Confederate Lieutenant General John C. Pemberton concentrated defenses inside the city and surrounding high ground.
Initial Assaults (May 19 and May 22, 1863)
Direct attacks on May 19 and May 22 produced heavy Union casualties against fortified Confederate positions. Artillery and rifle fire from elevated Confederate works inflicted severe losses, contributing to the high killed and wounded counts in those days.
Siege Operations (May 25–July 3, 1863)
Following the failed assaults, Union forces settled into siege lines, bombarding the city and tightening encirclement. Sapping, parallel trenches, and steady artillery pressure wore down Confederate defenses while disease continued to erode both armies.
Surrender and Aftermath (July 4, 1863)
With supplies exhausted and escape routes cut, Pemberton surrendered on July 4, 1863. The capitulation produced the large captured contingent in the overall totals and marked the effective end of major Confederate control on the Mississippi.
Broader Implications and Legacy
The human cost at Vicksburg influenced postwar memory, veteran advocacy, and how historians assess the campaign’s necessity and success. Families in both the North and South grappled with losses that were compounded by the timing near the Fourth of July. Preservation efforts and ongoing scholarship continue to refine our understanding of the battlefield, the civilian experience, and the long-term consequences for communities shaped by the siege.