Early American Wars By Jackson1 Apr 19, 1775 The Battles of Lexington And Concord Dec 19, 1777 The Winter at Valley Forge Sep 21, 1780 Benedict Arnold turns traitor Jan 17, 1781 The Battle of Cowpens Aug 19, 1812 The USS Constitution defeats the HMS Guerriere Sep 12, 1814 The Battle of Baltimore Jan 8, 1815 The Battle of New Orleans Dec 2, 1828 The Election of Andrew Jackson Feb 23, 1836 The Battle of the Alamo Feb 2, 1848 Mexico loses California, New Mexico, and Arizona Nov 6, 1860 Abraham Lincoln Elected President Dec 20, 1860 South Carolina secedes from the United States Jul 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 May 1, 1898 Battle of the Philippines (Spanish American War, not World War II) Mar 3, 1931 The Adoption of the Star Spangled Banner as the National Anthem