HistoryData
war1863

1863 raid in the American Civil War

August 21, 1863

One of the deadliest civilian massacres of the Civil War, in which Confederate guerrillas killed around 150 men and boys in Lawrence, Kansas.

Quick Facts

Year
1863
Category
war

Key Facts

Date
August 21, 1863
Casualties
~150 men and boys killed
Attacking force
Quantrill's Raiders (Confederate guerrillas)
Target
Lawrence, Kansas — Unionist and abolitionist town
Leader of raid
William Quantrill

Location

Map of Lawrence, Kansas, United StatesMap of Lawrence, Kansas, United StatesLawrence, Kansas, United States

Cause → Event → Consequence

Cause

Lawrence, Kansas had long been a center of abolitionist sentiment and a base for Jayhawkers — free-state militia groups known for raiding pro-slavery settlements in western Missouri. This made the town a symbolic and strategic target for Confederate guerrilla forces operating along the Missouri-Kansas border.

Event

On the morning of August 21, 1863, Quantrill's Raiders, a Confederate guerrilla band led by William Quantrill, descended on Lawrence, Kansas. The attack killed approximately 150 men and boys, making it one of the most lethal civilian massacres of the American Civil War.

Consequence

The massacre intensified the brutal border warfare between Kansas and Missouri and prompted Union General Thomas Ewing Jr. to issue Order No. 11, forcibly depopulating several Missouri border counties to deprive guerrillas of civilian support, further escalating regional violence and displacement.

Belligerents & Mobilization Analysis

Side A

1 belligerent

Quantrill's Raiders (Confederate guerrillas)
Key Commanders

William Quantrill.

Side B

1 belligerent

Lawrence, Kansas civilians (Union)
Estimated Casualties150
Total Casualties (all sides)
150
Outcome
Confederate guerrilla victory; Lawrence sacked and approximately 150 men and boys killed

Timeline Context

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