War By J and J Co Jan 1, 1900 Start of the year 1900 Jul 28, 1914 World War 1 started World War 1 finished Nov 11, 1918 World War 1 Ended Sep 1, 1939 World War 2 Started World War 2 started Sep 2, 1945 World War 2 Ended Nov 1, 1955 Vietnam War Started Apr 30, 1975 Vietnam War Ended Mar 20, 2003 Iraq War Started https://en.wikipedia.org/wiki/Iraq_War Dec 31, 2011 Iraq War End http://content.time.com/time/specials/packages/0,28757,1967340,00.html Apr 28, 2016 Present Day Present Day