Events from the year 1945 in the United States. World War II ended during this year following the surrender of Germany in May and that of Japan in September.
Lieutenant Governor of Connecticut: William L. Hadden (Republican) (until month and day unknown), Charles Wilbert Snow (Democratic) (starting month and day unknown)
Lieutenant Governor of Delaware: Isaac J. MacCollum (Democratic) (until January 16), Elbert N. Carvel (Democratic) (starting January 16)
Lieutenant Governor of Indiana: Charles M. Dawson (Democratic) (until January 8), Richard T. James (Republican) (starting January 8)
Lieutenant Governor of Iowa: Robert D. Blue (Republican) (until January 11), Kenneth A. Evans (Republican) (starting January 11)
Lieutenant Governor of Kansas: Jess C. Denious, Sr. (Republican)
Lieutenant Governor of Kentucky: Kenneth H. Tuggle (Republican)
Lieutenant Governor of Louisiana: J. Emile Verret (Democratic)
Lieutenant Governor of Massachusetts: Horace T. Cahill (Republican) (until January 3), vacant (starting January 3)
Lieutenant Governor of Michigan: Eugene C. Keyes (Republican) (until month and day unknown), Vernon J. Brown (Republican) (starting month and day unknown)
Lieutenant Governor of Minnesota: Archie H. Miller (Republican) (until January 2), C. Elmer Anderson (Republican) (starting January 2)
Lieutenant Governor of Mississippi: Fielding L. Wright (Republican)
Lieutenant Governor of South Dakota: A. C. Miller (Republican) (until month and day unknown), Sioux K. Grigsby (Republican) (starting month and day unknown)
Lieutenant Governor of Tennessee: Joseph H. Ballew (Democratic) (until month and day unknown), Larry Morgan (Democratic) (starting month and day unknown)
January 20:Franklin D. Roosevelt, the President of the United States, begins his fourth term
Harry S. Truman becomes the 34th U.S. Vice President
January – American troops cross the Siegfried Line into Belgium.
January 6 – Naval lieutenant George H. W. Bush, future President of the United States, and future First Lady Barbara Pierce marry in Rye, New York.
January 20 – Franklin D. Roosevelt is inaugurated to an unprecedented fourth term as President of the United States. No president before, or since, reaches a third term in office. Harry S. Truman is sworn in as Vice President of the United States.
January 30 – Raid at Cabanatuan: 121 American soldiers and 800 Filipino guerrillas free 813 American POWs from the Japanese-held camp at Cabanatuan City, Philippines.
January 31 – Eddie Slovik is executed by firing squad for desertion, the first American soldier since the American Civil War, and last to date to be executed for this offense.
February[]
February 4–11: Yalta Conference
February 2 – WW II: President Franklin D. Roosevelt and British Prime MinisterWinston Churchill leave to meet with Soviet leader Joseph Stalin at the Yalta Conference.
February 3
WW II: United States forces capture Manila, Philippines from the Japanese Imperial Army.
Walt Disney Productions' seventh feature film, The Three Caballeros, is released. It is Disney's second of six package films to be released through the 1940s and the first feature film to incorporate traditional animation with live-action actors.
February 4 – WW II: President Franklin D. Roosevelt, Prime Minister of the United KingdomWinston Churchill and Soviet leader Joseph Stalin begin the Yalta Conference (ends February 11).
February 7 – WW II: General Douglas MacArthur returns to Manila.
February 16
Combined American and Filipino forces recapture the Bataan Peninsula.
American and Filipino ground forces land on Corregidor Island in the Philippines.
February 19 – WW II – Battle of Iwo Jima: About 30,000 United States Marines land on Iwo Jima.
February 23
The American and Filipino troops enter Intramuros, Manila.
The capital of the Philippines, Manila, is liberated by combined American and Filipino ground troops.
Battle of Iwo Jima: A group of United States Marines reach the top of Mount Suribachi on the island and are photographed raising the American flag. The photo, Raising the Flag on Iwo Jima (taken by Joe Rosenthal), later wins a Pulitzer Prize.
March[]
March 1 – President Franklin D. Roosevelt gives what will be his last address to a joint session of Congress, reporting on the Yalta Conference.
March 2 – Former Vice President Henry Agard Wallace starts his term of office as U.S. Secretary of Commerce, serving under President Roosevelt.
March 3 – WW II: United States and Filipino troops take Manila, Philippines.
March 7 – WW II: American troops seize the bridge over the Rhine River at Remagen, Germany and begin to cross.
March 15 – The 17th Academy Awards ceremony, hosted by John Cromwell and Bob Hope, is held at Grauman's Chinese Theater in Hollywood, Los Angeles, broadcast via radio for the first time. Leo McCarey's Going My Way wins Outstanding Motion Picture. The film also wins the most awards overall with seven, including McCarey's second win for Best Director, and ties for the most nominations with Henry King's Wilson, both with ten.
March 19 – WW II: Off the coast of Japan, bombers hit the aircraft carrierUSS Franklin, killing about 800 of her crewmen and crippling the ship.
March 24 – The cartoon character Sylvester the cat debuts in Life with Feathers
March 29 – The "Clash of Titans" in basketball: George Mikan and Bob Kurland duel at Madison Square Garden as OSU defeats DePaul 52–44.
April[]
April 12: Vice President Harry S. Truman becomes the 33rd U.S. President upon the death of President Franklin D. Roosevelt
April 1 – WWII – Battle of Okinawa: United States troops land on Okinawa.
April 4 – WWII – American troops liberate their first Nazi concentration camp, Ohrdrufdeath camp in Germany.
April 7 – The only flight of the German ramming unit known as the Sonderkommando Elbe takes place, resulting in the loss of some 24 B-17s and B-24s of the United States Eighth Air Force.
April 12 – President Franklin D. Roosevelt dies suddenly at Warm Springs, Georgia; Vice President Harry S. Truman becomes the 33rd President.
April 18 – The American war correspondentErnie Pyle is killed by Japanese machine gun fire on the island of Ie Shima off Okinawa.
April 19 – Rodgers and Hammerstein's Carousel, a musical play based on Ferenc Molnár's Liliom, opens on Broadway and becomes their second long-running stage classic.
April 25
WWII – Elbe Day: United States and Soviet troops link up at the Elbe River, cutting Germany in two.
Founding negotiations for the United Nations begin in San Francisco.
April 27 – U.S. Ordnance troops find the coffins of 18th-century Prussian kings Frederick Wilhelm I and Frederick the Great, in addition to German PresidentPaul Von Hindenburg and his wife.
May[]
May 3 – Rocket scientist Wernher von Braun and 120 members of his team surrender to U.S. forces (later he became at the forefront and a pioneer of the U.S. space program).
May 5
A Japanese Fu-Go balloon bomb kills five children and a grown woman, Elsie Mitchell, near Bly, Oregon, when it explodes as they drag it from the woods. They are the only people killed by an enemy attack on the American mainland during World War II.
The US 11th Armored Division liberates the prisoners of Mauthausen concentration camp, including Simon Wiesenthal.
Ezra Pound, the poet and author, is arrested by American soldiers in Italy for treason.
May 8 – Victory in Europe Day: The Allies accept Germany's unconditional surrender.
May 9 – Hermann Göring is captured by the United States Army; Norway arrests the traitor Vidkun Quisling.
June[]
June 22 - WWII - Battle of Okinawa ends.
July[]
July 8 – WW II: President Harry S. Truman is informed that Japan will talk peace if it can retain the Emperor.[1]
July 16 – The Trinity test detonates the world's first atomic bomb.
July 21 – WW II: President Harry S. Truman approves the order for atomic bombs to be used against Japan.[1]
July 28 – A U.S. Army Air ForcesB-25 bomber crashes into the Empire State Building, killing 14 people, including all on board.
July 30 – WW II: The heavy cruiser USS Indianapolis is hit and sunk by torpedoes from the I-58 in the Philippine Sea. Some 900 survivors jump into the sea and are adrift for up to four days. Nearly 600 die before help arrives. Captain Charles B. McVay III of the cruiser is later court-martialed and convicted.
August[]
August 6: Atomic bombing of Hiroshima
August 6 – WW II: Atomic bombing of Hiroshima: The United States drops an atomic bomb (nicknamed "Little Boy") on Hiroshima, Japan, at 8:15 a.m. (local time). This sent shockwaves throughout the world as the first atomic bomb used on civilians.
August 7 – President Harry Truman announces the successful bombing of Hiroshima with the atomic bomb, while returning from the Potsdam Conference aboard the U.S. Navy heavy cruiser USS Augusta in the middle of the Atlantic Ocean.
August 8 – The United Nations Charter is ratified by the United States Senate, and this nation becomes the third one to join the new international organization.
August 9 – The United States drops an atomic bomb nicknamed "Fat Man" on Nagasaki, Japan, at 11:02 a.m. (local time).
August 14 (August 15 in Japan) – Emperor Hirohito announces Japan's surrender on the radio. The United States calls this day V-J Day (Victory over Japan). This ends the period of Japanese expansionism and begins the period of Occupied Japan.
August 17 – The United States and the U.S.S.R. split up the Korean Peninsula making North Korea and South Korea
September[]
September 2
World War II ends: The final official surrender of Japan is accepted by the Supreme Allied Commander, GeneralDouglas MacArthur, and Fleet AdmiralChester Nimitz for the United States, and delegates from Australia, New Zealand, the United Kingdom, The Netherlands, China, and others from a Japanese delegation led by Mamoru Shigemitsu, on board the American battleship USS Missouri in Tokyo Bay (but in Japan August 14 is recognized as the day the Pacific War ended).
Japanese general Tomoyuki Yamashita surrenders to Filipino and American forces at Kiangan, Ifugao.
September 5
The Russian code clerk Igor Gouzenko comes forward with numerous documents implicating the Soviet Union in numerous spy rings in North America: both in the United States and in Canada.
Iva Toguri D'Aquino, a Japanese-American suspected of being wartime radio propagandist "Tokyo Rose", is arrested in Yokohama.
September 8 – American troops occupy southern Korea, while the Soviet Union occupies the north, with the dividing line being the 38th parallel of latitude. This arrangement proves to be the indirect beginning of a divided Korea.
September 9 – The first actual case of a (computer) bug being found, is a moth lodged in a relay of a Harvard Mark II computer at the Naval Weapons Center in Dahlgren, Virginia.
September 20 – The Office of Strategic Services (OSS) is disbanded and split up among several other agencies.
October[]
October 3–10 – The Detroit Tigers win the World Series against the Chicago Cubs.
October 5 – A strike by the Set Decorator's Union in Hollywood results in a riot.
October 23 – Jackie Robinson signs a contract with the Montreal Royals.
October 29 – At Gimbel's Department Store in New York City, the first ballpoint pens go on sale at $12.50 each.
November[]
November 15 – Harry S. Truman, Clement Attlee, and Mackenzie King call for a U.N. Atomic Energy Commission.[1]
November 16 – Cold War: The United States controversially imports 88 German scientists to help in the production of rocket technology.
December[]
December 4 – By a vote of 65–7, the United States Senate approves the entry of the United States into the United Nations.[2]
December 21 – General George S. Patton dies from injuries sustained in a car accident on December 9.
Undated[]
The U.S. House of Representatives calls for unrestricted Jewish immigration to Palestine in order to establish a Jewish commonwealth there.
The Berklee College of Music is founded in Boston.
Russian-American physicist Vladimir Kosma Zworykin coauthors Electron Optics and the Electron Microscope.
Ongoing[]
World War II, U.S. involvement (1941–1945)
Births[]
January[]
Stephen Stills
Tom Selleck
January 1 – Diahnne Abbott, American actress and singer