Major Wars of the 20th and 21st Centuries

Russo-Japanese War

Period: Feb 8, 1904 to Sep 5, 1905

Olender, Piotr (2010). Russo-Japanese Naval War 1904–1905, Vol. 2, Battle of Tsushima. Sandomierz, Poland: Stratus s.c. ISBN 978-83-61421-02-3, pp.233.

World War I

Period: Jul 28, 1914 to Nov 11, 1918

Willmott, H.P. (2003), World War I, New York: Dorling Kindersley, ISBN 0-7894-9627-5, OCLC 52541937, pp.307.

Russian Civil War

Period: Nov 7, 1917 to Oct 25, 1923

Evan Mawdsley. The Russian Civil War. New York: Pegasus Books, 2007, 3.

World War II

Period: Sep 18, 1939 to Sep 2, 1945

http://www.ushmm.org/wlc/en/article.php?ModuleId=10007306

Korean War

Period: Jun 25, 1950 to Jul 27, 1953

http://koreanwar60.com/timeline-korean-war-events

Vietnam War

Period: Nov 1, 1955 to Apr 30, 1975

DoD (6 November 1998). "Name of Technical Sergeant Richard B. Fitzgibbon to be added to the Vietnam Veterans Memorial". Department of Defense (DoD). Retrieved 9 Dec 2014.

Yemen Civil War

Period: Sep 26, 1962 to Apr 29, 1970

http://www.globalsecurity.org/military/world/war/yemen.htm; Almadhagi, Ahmed Noman. Yemen and the USA: A Super-Power and a Small-state Relationship, 1962-1992. Vol. 2. IB Tauris, 1996, 87.

Iran-Iraq War

Period: Sep 22, 1980 to Aug 20, 1988

Hiro, Dilip. The longest war: the Iran-Iraq military conflict. Psychology Press, 1989, xxiii.

Gulf War

Period: Aug 2, 1990 to Feb 28, 1991

http://www.pbs.org/wgbh/pages/frontline/gulf/cron/

War in Afghanistan

Period: Oct 7, 2001 to Dec 10, 2014

*End date does not exist.
http://www.cbsnews.com/news/the-war-in-afghanistan-a-timeline/

Iraq War

Period: Mar 20, 2003 to Dec 15, 2011

http://lcweb2.loc.gov/diglib/lcwa/html/iraq/iraq-overview.html; http://www.nytimes.com/interactive/2010/08/31/world/middleeast/20100831-Iraq-Timeline.html?_r=0#/#time111_3296

Syrian Civil War

Period: Mar 24, 2011 to Dec 10, 2014

*Approximate start date.
*No end date because conflict is continuing.
http://www.cnn.com/2013/08/27/world/meast/syria-civil-war-fast-facts/