Important Wars in History TN State Standard 3.5.03 By k_schrank Apr 19, 1775 Revolutionary War Jun 18, 1812 War of 1812 Apr 27, 1846 Mexican-American War Apr 12, 1861 Civil War Jul 28, 1914 WW1 Sep 1, 1939 WW2 Apr 27, 1947 Cold War Jun 25, 1950 Korean War Nov 1, 1955 Vietnam War Aug 2, 1990 Gulf War Aug 2, 1990 Persian Gulf War