Early AmericanWars By Jaydenebarger 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 Jan 8, 1815 The Battle of New Orleans 1828 The Election of Andrew Jackson Sep 12, 1834 battle of baltimore Feb 23, 1836 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 battle of bull run Jun 1, 1863 battle of gettysburg Apr 9, 1865 The Treaty at Appomattox Courthouse Feb 15, 1898 sinking of 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