Scientists discovered that an uranium atom can be split (fission).
December 17, 1938
Germany Invades Poland (starts WWII)
September 1, 1939 - October 6, 1939
Albert Einstein sends a letter to Franklin Roosevelt involving the concept of fission.
October 11, 1939
Germany captures Norway and Denmark.
April 9, 1940 - June 10, 1940
December 7, 1941
The Japanese bombed America's naval base in Hawaii. 2403 people died. This caused America to enter World War II. This also started the war in the Pacific.
Laboratory Number 2 was established (the Soviet Union's atomic bomb project)
February 27, 1943
Operation Gunnerside was the project to destroy the German's heavy water plant. The plant was creating heavy water for Germany's atomic bomb project. Norwegian resistance fighters snuck in through an air vent and bombed the plant.
The Hydro sank.
February 21, 1944
The 509th Composite Group was established.
December 17, 1944
Adolf Hitler committed suicide.
April 30, 1945
The Trinity Test
July 16, 1945
The Trinity Test was when the Los Alamos scientists tested to make sure the atomic bomb worked. It was located in Alamogordo, New Mexico. The test succeeded and led the scientists to drop the bomb on Hiroshima.
The first atomic bomb was dropped on Hiroshima, Japan.
August 6, 1945
The first atomic bomb was dropped on Hiroshima, Japan. The bomb was nicknamed "Little Boy" and flew on the Enola Gay to Japan. The bomb killed 192,020 people total.
Another atomic bomb was dropped on Nagasaki, Japan
August 15, 1945
The second atomic bomb was dropped on Nagasaki by America. This bomb was nicknamed "Fat Man". This bomb killed 30,000-40,000 people. The bomb was dropped because Japan refused to surrender.
World War II ended
August 15, 1945
President Truman announcer work for a hydrogen bomb.