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Benedict Arnold: the hero who became a traitor

American Revolution · General and turncoat · 1741 to 1801 · ~5 min read · Updated October 2026

1776 mezzotint of Benedict Arnold in Continental uniform and tricorn hat, pointing towards Quebec

At a glance

Lived
1741 to 1801
Role
Major General, later British brigadier
Famous for
Heroism at Saratoga, then treason
Turning point
The West Point plot, 1780
Signature
Brilliant in battle, bitter in grievance
Legacy
A byword for treason

Benedict Arnold might have been remembered among the greatest heroes of the Revolution. Instead his name became the American word for traitor. Few soldiers did more to win American independence in the early war, and no one did more to betray it.

The fighting general

Born in Connecticut in 17411, Arnold proved among the boldest and most capable American commanders of the early Revolution, from the march on Quebec to the naval fight on Lake Champlain2. At the Battle of Saratoga in 1777, he fought with reckless courage and did much to win the victory that brought France into the war3, though he was badly wounded and felt robbed of the credit.3

Engraving of a general falling with his horse during an assault on an earthwork
General Arnold wounded in the attack on the Hessian redoubt at Saratoga, an engraving of 1860 in the New York Public Library. Public domain

Grievance and betrayal

Passed over for promotion, accused of corruption, and deep in debt1, Arnold grew bitter. In 1780, while commanding the vital fortress of West Point on the Hudson, he secretly agreed to surrender it to the British for money and rank4. The plot was exposed when his British contact, Major Andre, was captured with the incriminating papers.1

Painting of three militiamen stopping a British officer in a wooded landscape
The Capture of Major Andre, painted by Asher Brown Durand in 1833. Worcester Art Museum. Public domain

The turncoat's end

Arnold escaped to the British, who made him a brigadier5, and he led raids against his former countrymen before the war ended. He spent his last years in Britain, never fully trusted and never prosperous, and died in London in 1801.5 His battlefield brilliance was all but erased by the single word his name became: traitor.

Engraving of an officer on high ground watching a burning town
Arnold watching the destruction of New London during his raid on Connecticut in 1781, an illustration from Cassell's History of the United States, 1874. Public domain

Sources and notes

Numbered notes in the text point to the works below.

  1. American Battlefield Trust, “Benedict Arnold” ↩ a b c
  2. James Kirby Martin, Benedict Arnold, Revolutionary Hero: An American Warrior Reconsidered (New York University Press, 1997). ↩
  3. American Battlefield Trust, “Saratoga” ↩ a b
  4. Nathaniel Philbrick, Valiant Ambition: George Washington, Benedict Arnold, and the Fate of the American Revolution (Viking, 2016). ↩
  5. National Park Service, Colonial National Historical Park, “Brigadier General Benedict Arnold” ↩ a b
  6. Wikipedia, “Benedict Arnold”

Frequently asked questions

Who was Benedict Arnold?

He was a brilliant American general of the Revolution (1741 to 1801) who later betrayed the cause, making his name a byword for treason.

What is Benedict Arnold famous for?

For his heroism at the Battle of Saratoga in 1777 and, infamously, for plotting in 1780 to surrender West Point to the British.

What did Benedict Arnold do that was treasonous?

While commanding West Point, he secretly agreed to hand the fortress to the British in exchange for money and a command in their army.

Was Benedict Arnold a good general?

Yes. Before his betrayal he was one of the ablest and bravest American commanders, especially at Saratoga.

What happened to Benedict Arnold after his treason?

He fought for the British for the rest of the war, then lived out his life in Britain, and died in London in 1801.

Hold the line at Saratoga

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