Durations of America's wars, up until now

[Philosoraptor]

http://www.historyguy.com/american_wars_by_length_of_time.html

Vietnam War--August, 1964 to April, 1975= 116 months (American involvement began in the late 1950s, but major U.S. combat forces began taking part in large unit combat in 1964)
American Revolution--April, 1775 to September, 1783= 100 months

Afghanistan-- October, 2001 to Present (as of June, 2009 )= 93 months

Iraq War--March, 2003 to Present (as of June, 2009)= 76 months

U.S. Civil War--April, 1861 to April, 1865= 48 months

World War II--December, 1941 to September, 1945= 45 months

World War I--April, 1917 to November, 1918= 19 months

Korean War-- June, 1950 to July, 1953= 37 months

War of 1812--June, 1812 to February, 1815= 32 months

U.S.-Mexican War-- May, 1846 to February, 1848= 21 months

Spanish-American War--April, 1898 to August, 1898= 5 months

Gulf War--January, 1991 to March, 1991= 3 months