Which battle is considered the deadliest in American military history?

Battle of Gettysburg.

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  1. Battle of Plattsburgh
  2. Battle of Gettysburg ✔
  3. Battle of Yorktown

Why: Gettysburg had over 50,000 casualties and proved a turning point in the Civil War.

Huh, didn't know that: Gettysburg had over 50,000 casualties and proved a turning point in the Civil War.

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Gettysburg really left a mark on history!
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References

Answer: Battle of Gettysburg. Gettysburg had over 50,000 casualties and proved a turning point in the Civil War.

  1. History of the United States en.wikipedia.org/wiki/History_of_the_United_States
    the deadliest battle in American military history with over 50,000 casualties
    Checked 2026-11-07.

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