September 12

Battle of Baltimore Begins in War of 1812

181419th CenturyMilitaryNorth Americahighexpanded detail

British forces attempted a coordinated land and naval strike on the defended port of Baltimore but withdrew after failing to overcome American positions at North Point and Fort McHenry.

Summary

Following their burning of Washington, D.C., British forces under Vice Admiral Alexander Cochrane targeted Baltimore, a key American port and privateering center, during the War of 1812. On September 12, British troops landed and advanced toward the city while warships bombarded Fort McHenry guarding the harbor entrance. American defenders, including militia and regulars under Samuel Smith, repelled the land assault at North Point, where British commander Robert Ross was killed. The fort withstood a night of naval bombardment, during which Francis Scott Key witnessed the American flag still flying and composed the poem that became the U.S. national anthem. The successful defense forced the British to withdraw, boosting American morale late in the conflict.

Context

The War of 1812 pitted the young United States against Great Britain over maritime rights, trade restrictions, and British support for Native American resistance on the western frontier. By 1814, with Napoleon’s defeat in Europe freeing British resources, London shifted more attention to the American theater. In the Chesapeake Bay region, British naval and army units had already conducted raids and, in late August, captured and burned much of Washington, D.C., in retaliation for American actions in Canada.

What Happened

On September 12, 1814, approximately 4,500 British troops under Major General Robert Ross landed at North Point on the Patapsco River and began marching toward Baltimore. They encountered roughly 3,000 Maryland militia commanded by Brigadier General John Stricker; in the resulting action Ross was killed and the British advance slowed. Simultaneously, Vice Admiral Alexander Cochrane’s fleet of sixteen warships positioned itself to bombard Fort McHenry, which guarded the entrance to Baltimore’s harbor under Major George Armistead. The naval bombardment began on the morning of September 13 and continued through the night into the following day.

Aftermath

Unable to reduce Fort McHenry or force a passage into the harbor, the British abandoned the operation and re-embarked their troops. The city remained in American hands, preserving its shipyards and privateering base. News of the successful defense reached negotiators at Ghent and contributed to a more favorable atmosphere for concluding peace.

Legacy

Francis Scott Key, who had been detained aboard a British truce vessel during the bombardment, observed the American flag still flying over Fort McHenry at dawn on September 14. His poem “The Defence of Fort M’Henry” was later set to music and, in 1931, became the official national anthem of the United States. The battle is remembered as a clear American defensive success that helped close the War of 1812 on terms that affirmed U.S. sovereignty.

Why It Matters

The defense of Baltimore preserved a major American city and shipbuilding hub while denying Britain a strategic victory in the Chesapeake. It directly inspired 'The Star-Spangled Banner,' which became the official national anthem in 1931, embedding the event in American civic identity and symbolizing resilience during the War of 1812 that helped define U.S. sovereignty.

Related Questions

Why did the British target Baltimore after burning Washington?

Baltimore was a major shipbuilding center and home port for privateers that had captured many British merchant vessels.

Who commanded the American defenses at Baltimore?

Major General Samuel Smith coordinated the overall defense, while Major George Armistead commanded Fort McHenry and Brigadier General John Stricker led the militia at North Point.

How long did the bombardment of Fort McHenry last?

British warships fired on the fort for approximately twenty-five hours beginning early on September 13.

What happened to British commander Robert Ross?

Ross was killed by American rifle fire during the engagement at North Point on September 12.

How did the battle lead to the national anthem?

Francis Scott Key, held on a British ship, saw the American flag still flying over Fort McHenry at dawn on September 14 and wrote a poem that later became “The Star-Spangled Banner.”

US Military Atlas: Major U.S. military engagement in the War of 1812 with lasting national symbolism.

Explore More

Search Archive

Sources

  1. Battle of Baltimore (1814) | Summary, Encyclopædia Britannica. Accessed 2026-07-04.
  2. September 12 - This Day in U.S. Military History, U.S. Naval History and Heritage Command via blog. Accessed 2026-07-04.
Back to September 12