Mahdist War happened in 1881.
War of the Regulation happened in 1770.
Toledo War happened in 1835.
Walton War happened in 1810.
Babylonian War happened in -311.
Kazan War happened in 1552.
As of August 2014, there is not another Civil war about to happen in the US.
World War 2
the war happen in 1955 to 1975
Mercenary War happened in -240.
Yuma War happened in 1850.
Cologne War happened in 1555.
Wing War happened in 1994.
Morean War happened in 1684.
Faces of War happened in 2006.
Phoney War happened in 1940.
Colorado War happened in 1864.
War Inc. happened in 1997.