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CASUALTY RECORD // September 11, 1777

Battle of Brandywine

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

Casualties by side

2 sides catalogued · combined 737–1,237 estimated

  • États-Unis

    250–750

    Medium-confidence figure

  • Royaume de Grande-Bretagne

    487

    Medium-confidence figure

Battle context

The Battle of Brandywine, fought near Chadds Ford, Pennsylvania on September 11, 1777, was the largest engagement by troop numbers in the entire American Revolution, with more than 30,000 combined forces in the field. It was also the second longest single-day battle of the war, with continuous fighting lasting eleven hours. The battle was fought as part of the British effort to seize Philadelphia, then the American capital, and its outcome directly enabled that objective. British forces under Howe routed the Continental Army and forced Washington's forces to withdraw first to Chester and then northeast toward Philadelphia, leaving the capital exposed. The defeat demonstrated the vulnerability of Washington's army to a coordinated British offensive and marked a significant setback for the Continental cause in the Philadelphia Campaign of 1777.

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Last verified June 2026
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