Battle of Baltimore Navy inspired Francis Scott Key to compose the poem "Defence of Fort McHenry", which later became the lyrics for "The Star-Spangled Banner", the national anthem of the United States of America. Future President James Buchanan served as Private in the defense of Baltimore. Until April 1814, Great Britain was at war with Napoleonic France, which limited British war aims in America. During this time the British primarily used a defensive strategy and repelled American invasions of the provinces of Upper and Lower Canada. However, the Americans gained naval control over Lake Erie in 1813, and seized parts of western Ontario.
Fort McHenry Shrine". During the War of 1812 an American storm flag, , was flown over Fort McHenry during the bombardment. It was replaced early on the morning of September 14, 1814 with a larger American garrison flag, . The larger flag signaled American victory over the British in the Battle of Baltimore. The sight of the ensign inspired Francis Scott Key to write the poem "Defence of Fort M'Henry" that was later set to the tune "To Anacreon in Heaven" and became known as the "Star Spangled Banner", the national anthem of the United States. Fort McHenry was built on the