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CASUALTY RECORD // December 15, 1899

Battle of Colenso

Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.

Casualties by side

1 sides catalogued · combined 143–755 estimated

  • Empire britannique

    143–755

    Medium-confidence figure

Battle context

The Battle of Colenso was the third and final engagement of Black Week, a sequence of defeats that marked one of the most damaging periods for British arms in the Second Boer War. Fought between a British force of 14,000 under Redvers Buller and approximately 4,500 Boer fighters under Louis Botha, the action resulted in British casualties and compounded the shock of the preceding Black Week reverses. The concentration of three defeats within a single week forced a reassessment of British strategy and command in South Africa, contributing to changes in senior leadership and the broader conduct of the war.

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Sources (7)

Last verified June 2026
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