3 Jul 1923

Photo(s) dated 3 Jul 1923
Aircraft carrier USS Langley (Langley-class) alongside the Washington Navy Yard, Washington, DC, United States, 3 Jul 1923. The white building at the photo’s top left is the present day National Museum of the Navy.
9 Jun 1939

Photo(s) dated 9 Jun 1939
President Franklin Roosevelt (striped tie) with Eleanor Roosevelt (far left) and King George VI and Queen Elizabeth of the United Kingdom (between the Roosevelts) aboard the yacht Potomac, Washington, DC, 9 Jun 1939
1 Jul 1939

United States
19 Sep 1940

United States
  • British members of the Tizard scientific mission met with their American counterparts at the Wardman Park Hotel in Washington DC, United States and began exchanging results of their scientific research up to that point, including and especially their radar technology. All by itself, this first meeting almost immediately led to vast improvements to radar on both sides and also led to further advancements in related areas, such as development of the proximity fuze. ww2dbase [Vannevar Bush | VT Radio Proximity | Washington DC | DS]
23 Oct 1940

Photo(s) dated 23 Oct 1940
Aerial view of the White House, Washington DC, United States, 23 Oct 1940.
19 May 1942

Photo(s) dated 19 May 1942
President Franklin Roosevelt presenting the Medal of Honor to Brigadier General James Doolittle for Doolittle’s role in leading a bomber attack on Tokyo one month earlier, White House, Washington DC, United States, 19 May 1942.
28 Jul 1942

Photo(s) dated 28 Jul 1942
Admiral Ernest King, Chief of Naval Operations; Admiral William Leahy, Chief of Staff to the President; and General George Marshall, Army Chief of Staff at the White House, Washington DC, United States, 28 Jul 1942.
1 Aug 1944

Photo(s) dated 1 Aug 1944
United States Navy Vice-Admirals Aubrey Fitch (left) and John McCain on the occasion of Fitch relieving McCain as the Deputy Chief of Naval Operations for Air, Washington DC, United States, 1 Aug 1944.
20 Feb 1947

Photo(s) dated 20 Feb 1947
President Harry Truman and members of the National Defense Research Committee, White House, Washington D.C., United States, 20 Jan 1947.
20 Jan 1960

Photo(s) dated 20 Jan 1960
The former PT-796, a 78-foot Higgins boat, painted as PT-109, an 80-foot Elco boat, passing the reviewing stand in President John F. Kennedy’s inaugural parade in Washington DC, United States, 20 Jan 1960.
23 Dec 1999

United States
24 Nov 2018

Photo(s) dated 24 Nov 2018
Cutaway of a disarmed Mousetrap rocket and warhead at the National Museum of the United States Navy, Washington Navy Yard, Washington DC, United States, 24 Nov 2018. Note the museum’s caption in the lower right.
20 Dec 2018

Photo(s) dated 20 Dec 2018
Chronometer from the German U-505 at the National Museum of the United States Navy in Washington DC, 20 Dec 2018.
17 Jul 2019

United States
  • 75 years after the Port Chicago explosion of 17 Jul 1944, by act of Congress, all 50 African-American sailors charged with mutiny following their refusal to resume loading munitions (all of whom had passed away) were fully exonerated of all charges and their records restored. ww2dbase [Port Chicago Naval Munitions Explosion | Washington DC | DS]

Timeline Section Founder: Thomas Houlihan
Contributors: Alan Chanter, C. Peter Chen, Thomas Houlihan, Hugh Martyr, David Stubblebine
Special Thanks: Rory Curtis




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"With Germany arming at breakneck speed, England lost in a pacifist dream, France corrupt and torn by dissension, America remote and indifferent... do you not tremble for your children?"

Winston Churchill, 1935


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