* 1939 – 1945, the Second Battle of the Atlantic.

* 1945 – World War II: Sarajevo is liberated from German and Croatian forces by the Yugoslav Partisans.

* 1945 – World War II: the Battle of Slater's Knoll on Bougainville comes to an end.

* 1945 – Neal Boortz, American radio personality

* 1945 – U. S. President Franklin D. Roosevelt dies while in office ; vice-president Harry Truman is sworn in as the 33rd President.

* 1945 – Lee Jong-wook, Korean Director-General of the World Health Organization ( d. 2006 )

* 1945 – World War II: Führerbunker: Adolf Hitler and Eva Braun commit suicide after being married for one day.

* 1945 – Annie Dillard, American writer

* 1945 – Mimi Fariña, American singer-songwriter, musician, and activist ( d. 2001 )

* 1945 – Michael J. Smith, American astronaut ( d. 1986 )

* 1871 – Theodore Dreiser, American author ( d. 1945 )

* 1905 – Aris Velouchiotis, Greek military leader ( d. 1945 )

* 1945 – Jan Sloot, Dutch inventor ( d. 1999 )

* 1945 – World War II: Hiroshima, Japan is devastated when the atomic bomb " Little Boy " is dropped by the United States B-29 Enola Gay.

* 1945 – Ron Jones, English director ( d. 1993 )

* 1945 – Andy Messersmith, American baseball player

* 1945 – World War II: Nagasaki, Japan is devastated when an atomic bomb, Fat Man, is dropped by the United States B-29 Bockscar.

* 1945 – World War II: The Soviet Union declares war on Japan and begins the Manchurian Strategic Offensive Operation.

* 1945 – Barbara Delinsky, American author

* 1945 – Aleksandr Gorelik, Russian figure skater ( d. 2012 )

* 1945 – Posy Simmonds, English cartoonist

* 1866 – Giovanni Agnelli, Italian businessman, founded Fiat S. p. A ( d. 1945 )

* 1945 – Lars Engqvist, Swedish politician

* 1945 – Robin Jackman, English cricketer

* 1897 – Karl-Otto Koch, German SS officer ( d. 1945 )

Walter Johnson, Carl Hubbell, and Hal Newhouser are the only pitchers who have won multiple times, Newhouser winning consecutively in 1944 and 1945.

The books that were influential in the early development of computational quantum chemistry include Linus Pauling and E. Bright Wilson's 1935 Introduction to Quantum Mechanics – with Applications to Chemistry, Eyring, Walter and Kimball's 1944 Quantum Chemistry, Heitler's 1945 Elementary Wave Mechanics – with Applications to Quantum Chemistry, and later Coulson's 1952 textbook Valence, each of which served as primary references for chemists in the decades to follow.

* 1945 – Walter Momper, German politician

* 1891 – Walter Model, German field marshal ( d. 1945 )

* Walter Model ( 1891 – 1945 ), German Field Marshal of World War II

Claude Bernard's ( 1813 – 1878 ) further discoveries ultimately led to his concept of milieu interieur ( internal environment ), which would later be taken up and championed as " homeostasis " by American physiologist Walter Cannon ( 1871 – 1945 ).

* October 19 – Walter Bradford Cannon, American physiologist ( d. 1945 )

* January 24 – Walter Model, German field marshal ( d. 1945 )

Howard Walter Florey, Baron Florey, OM, FRS ( 24 September 1898 – 21 February 1968 ) was an Australian pharmacologist and pathologist who shared the Nobel Prize in Physiology or Medicine in 1945 with Sir Ernst Boris Chain and Sir Alexander Fleming for his role in the making of penicillin.

They had two children: Helmut Walter ( 26 June 1944 – February 1945, died of meningitis ), and Susanne ( b. 1947 ), who works in London for Bloomberg Television.

Wilhelm Keitel wrote his memoirs in the six weeks before he was hanged ; they have been published later in few editions, for example " The Memoirs of Field-Marshal Wilhelm Keitel: Chief of the German High Command, 1938 – 1945 " edited by Walter Görlitz, ISBN 978-0-8154-1072-0.

Upon his return in 1945, Walter, who by now suffered from malaria, again played for Kaiserslautern, leading them to German championships in 1951 and 1953.

* Walter Clinton Jackson ( dean of administration, 1934 – 1945 ; chancellor, 1945 – 1950 )

* Walter Bradford Cannon ( 1871 – 1945 ), physiologist

* Howard Walter Florey, Nobel Laureate ( 1945, Medicine )

After study, it appeared this was a much better ( and cheaper ) solution anyway, and after January 1945 there were no plans to use the Walter design.

The orchestra was founded in 1945 by Walter Legge.

In September 1945, the first group of seven rocket scientists arrived at Fort Strong, Massachusetts: Wernher von Braun, Erich W. Neubert, Theodor A. Poppel, August Schulze, Eberhard Rees, Wilhelm Jungert, and Walter Schwidetzky.

In September 1945, Minton suffered a heart attack while in Washington ; he was hospitalized for three months at Walter Reed Hospital.

After 1945 Thomas sought to make the non-Communist left the vanguard of social reform, in collaboration with labor leaders like Walter Reuther.

* Walter Bradford Cannon ( 1871 – 1945 ), physiologist who first developed the concepts of fight or flight and homeostasis

In June 1945, he was appointed Regierungspräsident ( president of the government ) of Thuringia, an office he lost again in July after Thuringia became part of the Soviet occupation zone, due to pressure from Walter Ulbricht.

In 1945, Walter was awarded the Knight's Cross for his wartime service.