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The bombardment that inspired the U.S. anthem began

On this day · 13 September 1814
45 sec read

A 25-hour British shelling of a Baltimore fort failed to lower one flag, and gave a young lawyer his most famous lines.

Verified · Ben's Guide to the U.S. Government (GPO)

At dawn on September 13, 1814, British warships in the Chesapeake opened fire on Fort McHenry, the star-shaped guardian of Baltimore harbor. For roughly 25 hours they hurled mortar shells and Congreve rockets at the garrison, most bursting short or overhead. The fort, low on long-range guns, mostly held its fire and absorbed the storm.

Watching from a truce ship downriver was Francis Scott Key, a 35-year-old lawyer detained while negotiating a prisoner’s release. He had seen the assault begin; through the smoke he could not tell who had won.

When dawn on the 14th showed the American flag still flying, Key began scribbling the lines on the back of a letter.

His poem, Defence of Fort M’Henry, was published within the week and set to a popular melody. As “The Star-Spangled Banner,” it became the United States’ official national anthem in 1931 — born from a battle the fort’s defenders, against the odds, did not lose.

25h
bombardment
1814
battle
1931
made anthem

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 Ben's Guide to the U.S. Government (GPO) government agency “During the War of 1812, on September 13, 1814, Key watched a night-time battle between Great Britain and America that took place in Baltimore, Maryland at Fort McHenry.” bensguide.gpo.gov ↗
2 American Battlefield Trust — New Orleans article “The attack began on September 13, 1814. For twenty-four hours, mortar shells and Congreve rockets were hurled at the fort.” battlefields.org ↗
✓ Last reviewed Jun 7, 2026

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