When Was WW2?

WW2 Intro Photo (Invasion of Poland) When did WW2 start?

This seemingly simple question actually has several answers. They are all correct answers, depending on your definition of what WW2 is.

When did WW2 end?

WW2 Intro Photo (Japanese Surrender)

Germany capitulated on 7 May 1945 after Soviet troops entered her capital city of Berlin. Emperor Showa (known as "Emperor Hirohito" in some English sources) announced the intention for the Japanese surrender on 14 Aug 1945, and the surrender ceremony took place in Tokyo Bay on 2 Sep 1945. While the guns fell silent in 1945, from an international law sense the state of war continued until the Treaty of San Francisco was signed in Sep 1951; it went into effect in Apr 1952, finally officially ending the costliest war in human history.

Next: Why Did WW2 Take place?

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Visitor Submitted Comments

  1. Alan Chanter says:
    9 Aug 2009 12:58:21 AM

    To be strictly correct the state of war between Great Britain and Germany was officially terminated on July 2,1951. The state of war between Japan, Britain and 47 other non-communist countries was formally ended by the signing of the San Francisco Peace Treaty on September 8,1951.
  2. yogcast is awesome 53321 says:
    2 Feb 2012 09:43:44 AM

    wen did ameirica start using aircraft for warfare? also, who decided to end ww2?
  3. pat says:
    10 May 2012 08:07:06 PM

    its cool
  4. TANAY HAYES says:
    1 Feb 2015 07:35:41 AM


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Bismarck near Bergen, Norway, 21 May 1941, photo 2 of 2

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Famous WW2 Quote
"Since peace is now beyond hope, we can but fight to the end."

Chiang Kaishek, 31 Jul 1937