Early American Wars Timeline. By IMADOOR16 Apr 19, 1775 The Battles of Lexington and Concord. The Battle of Lexington and Concord was a battle during the American Revolutionary War in 1775. Dec 19, 1777 The Winter at Valley Forge Bad winter and they got help to train better, in the revolutionary war. Jan 17, 1781 The Battle of Cowpens The Battle of Cowpens was a battle during the Revolutionary War at Yorktown. Sep 12, 1814 The Battle of Baltimore. The Battle of Baltimore was a battle during the battle of 1812. Jan 8, 1815 The Battle of New Orleans The Battle of New Orleans was a battle during the Battle of 1812 between the British under Major General Sir Edward Pakenham and America under Brevet Major General Andrew Jackson. Feb 23, 1836 The Battle of the Alamo The Battle of the Alamo happened during the independence of Texas, lasting 13 days. Nov 3, 1860 South Carolina secedes from the United States South Carolina on November 3, 1860, was the first state to secede from the federal Union. Mar 4, 1861 Abraham Lincoln Elected President Abraham Lincoln was elected President, not much to say here. Jul 21, 1861 The First Battle of Bull Run Also called the First Battle of Manassas, the battle was one of the first major battles of the American Civil War. Jul 1, 1863 The Battle of Gettysburg The Battle of Gettysburg was a Union win, which ended Confederate General Robert E. Lee's second quest to invade the North. Feb 15, 1898 The sinking of the USS Maine. The sinking of the USS Maine was the sinking of the USS Maine in Havana, Cuba harbor, which was caused by unknown reasons and killed 266 of the 354 crew members. 1931 The Adoption of the Star Spangled Banner as the National Anthem. The Adoption of the Star Spangled Banner as the National Anthem can be called a big deal in American history it was made during another big time in history with the Battle of 1812. Apr 9, 1965 The Treaty at Appomattox Courthouse The Treaty at Appomattox Courthouse was not a treaty but rather a surrender of the Confederate government.