Early American Wars By Madison32 Apr 17, 1775 The Battles of Lexington and Concord Jan 1, 1777 The Winter at Valley Forge Jan 17, 1781 The Battle of Cowpens Sep 12, 1814 The Battle of Baltimore Sep 14, 1814 The Adoption of the Star Spangled Banner as the National Anthem Jan 8, 1815 The Battle of New Orleans Feb 23, 1836 The Battle of the Alamo Nov 6, 1860 Abraham Lincoln Elected President Dec 20, 1860 South Carolina secedes from the United States Sep 21, 1861 The First Battle of Bull Run Jul 1, 1863 The Battle of Gettysburg Apr 9, 1865 The Treaty at Appomattox Courthouse Feb 15, 1898 The sinking of the USS Maine