How did the American flag play a role in the war of 1812 and the revolutionary war?

During the Revolutionary War, the American flag symbolized unity and the colonies' quest for independence from British rule, with the Continental Army adopting various flags, including the Grand Union Flag. The War of 1812 saw the flag become a powerful emblem of national identity, particularly during the defense of Fort McHenry, which inspired Francis Scott Key to write "The Star-Spangled Banner." In both conflicts, the flag served as a rallying point for American troops, embodying their struggle for freedom and sovereignty. Its evolution reflected the growing sense of American nationalism and unity.