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CASUALTY RECORD // August 1, 1904

Siege of Port Arthur

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

Casualties by side

2 sides catalogued · combined 147,224 estimated

  • Empire of Japan

    91,549

    Medium-confidence figure

  • Russian Empire

    55,675

    Medium-confidence figure

Battle context

Siege of Port Arthur, Russo-Japanese War.

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Last verified June 2026
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