An atomic bomb, codenamed “Little Boy,” was dropped over Hiroshima Japan on August 6, 1945. The bomb, which detonated with an energy of around 15 kilotons of TNT, was the first nuclear weapon deployed in wartime.

The crew of the Boeing B-29 bomber, Enola Gay, which made the flight over Hiroshima to drop the first atomic bomb. Left to right kneeling; Staff Sergeant George R. Caron; Sergeant Joe Stiborik; Staff Sergeant Wyatt E. Duzenbury; Private first class Richard H. Nelson; Sergeant Robert H. Shurard. Left to right standing; Major Thomas W. Ferebee, Group Bombardier; Major Theodore Van Kirk, Navigator; Colonel Paul W. Tibbetts, 509th Group Commander and Pilot; Captain Robert A. Lewis, Airplane Commander.

A view of the atomic bomb as it is hoisted into the bay of the Enola Gay on the North Field of Tinian airbase, North Marianas Islands, early August, 1945.

Hiroshima in ruins after the dropping of the atomic bomb on August 6, 1945. The circle indicates the target of the bomb. The bomb directly killed an estimated 80,000 people. By the end of the year, injury and radiation brought the total number of deaths to between 90,000 and 166,000.

The plutonium bomb, nicknamed “Fat Man,” is shown in transport. It would be the second nuclear bomb dropped by U.S. forces in World War II.

An Allied correspondent stands in rubble on September 7, 1945, looking to the ruins of a cinema after the atomic bomb attack on Hiroshima.

Children in Hiroshima, Japan are shown wearing masks to combat the odor of death after the city was destroyed two months earlier.

Survivors hospitalized in Hiroshima show their bodies covered with keloids caused by the atomic bomb.

World War II was more destructive than any war before it. An estimated 45-60 million people lost their lives and millions more were injured. Here, Private Sam Macchia from New York City returns home, wounded in both legs, to his elated family.

A parish priest waves a newspaper with news of Germany’s unconditional surrender to elated pupils of a Roman Catholic parochial school in Chicago.

Merchant Marine Bill Eckert wildy impersonates Hitler as a reveler playfully chokes him amidst a crowd in Times Square during a massive V-E Day celebration.

People crowd on top of a van during a V-E Day celebration in London.

Patients at England’s Horley Military Hospital, all severely wounded in France and Italy, celebrate V-E Day with nursing staff.

U.S. war veterans returning home from Europe, on a converted troop ship.

Wall Street is jammed as Financial District workers celebrate the reported end of the war in Europe. Celebrants clamber over the statue of George Washington as thousands of others stand amid falling ticker tape.

Wounded veteran Arthur Moore looks up as he watches the ticker tape rain down from New York buildings.

Private B. Potts of the Middlesex Regiment makes a “V” sign from the porthole of the hospital ship “Atlantis” as he arrives home from World War II with an injury.

A British soldier arrives home to a happy wife and son after serving in World War II.

Sailors and Washington, D.C. residents dance the conga in Lafayette Park, waiting for President Truman to announce the surrender of Japan in World War II.

U.S. servicemen in the sick bay of the S.S. Casablanca smile and point to a newspaper on August 15, 1945 with the headline “JAPS QUIT!” after the Japanese surrender in World War II.

An apartment house on 107th Street in New York City is decorated for celebration at the end of World War II (V-J Day).

A V-J Day rally in New York City’s Little Italy on September 2, 1945. Local residents set fire to a heap of crates to celebrate the Japanese surrender at the end of World War II.

Joyous American soldiers and WACS fresh from bed parade through the London night celebrating V-J Day and the end of WWII.

A women jumps into the arms of a soldier upon his return from World War II, New York, NY, 1945.

An American soldier with lipstick on his face after V-J day celebrations.

The 42nd Regiment arrive back home to Hawaii on July 2, 1946. They are greeted by cheering friends and loved ones throwing leis.

Sailor George Mendonsa saw dental assistant Greta Zimmer Friedman for the first time among the celebration at V-J Day. He grabbed and kissed her. This photograph would go on to become one of the most well-known in history, while also stirring up controversy. Many women have claimed to be the nurse over the years, some saying it depicts a nonconsensual moment, even sexual harassment.

On December 7, 1941, the U.S. naval base Pearl Harbor was the scene of a devastating surprise attack by Japanese forces that would push the U.S. into entering WWII. Japanese fighter planes destroyed nearly 20 American naval vessels, including eight battleships, and over 300 airplanes. More than 2,400 Americans (including civilians) died in the attack, with another 1,000 Americans wounded.

Women stepped in to fill the empty civilian and military jobs once only seen as jobs for men. They replaced men in assembly lines, factories and defense plants, leading to iconic images like Rosie the Riveter that inspired strength, patriotism and liberation for women. This photograph was taken by photojournalist Margaret Bourke-White, one of the first four photographers hired for Life Magazine.

After German soldiers swept through Belgium and Northern France in a blitzkrieg in May of 1940, all communication and transport between Allied forces were cut, leaving thousands of troops stranded. Soldiers waded through the water hoping to escape by rescue vessels, military ships, or civilian ships. More than 338,000 soldiers were saved during what would be later called, the “Miracle of Dunkirk.”

This photograph titled “Taxis to Hell- and Back- Into the Jaws of Death” was taken on June 6, 1944 during Operation Overlord by Robert F. Sargent, United States Coast Guard chief petty officer and “photographer’s mate.”

This photograph, taken in 1942 by Life Magazine photographer Gabriel Benzur, shows Cadets in training for the U.S. Army Air Corps, who would later become the famous Tuskegee Airmen. The Tuskegee Airmen were the first black military aviators and helped encourage the eventual integration of the U.S. armed forces.

In April 1943, residents of the Warsaw ghetto staged a revolt to prevent deportation to extermination camps. However, in the end the Nazi forces destroyed many of the bunkers the residents were hiding in, killing nearly 7,000 people. The 50,000 ghetto captives who survived, like this group pictured here, were sent to labor and extermination camps.

This 1944 photograph shows a pile of remaining bones at the Nazi concentration camp of Majdanek, the second largest death camp in Poland after Auschwitz.

On January 27, 1945, the Soviet army entered Auschwitz and found approximately 7,6000 Jewish detainees who had been left behind. Here, a doctor of the 322nd Rifle Division of the Red Army helps take survivors out of Auschwitz. They stand at the entrance, where its iconic sign reads “Arbeit Mecht Frei,” (“Work Brings Freedom”). The Soviet Army also discovered mounds of corpses and hundreds of thousands of personal belongings.

This Pulitzer Prize winning photo has become synonymous with American victory. Taken during the Battle of Iwo Jima by Associated Press photographer Joe Rosenthal, it is one of the most reproduced, and copied, photographs in history.

The Battle of Iwo Jima image was so powerful in it’s time that it even caused copycats to stage similar images. This photograph was taken on April 30, 1945, during the Battle of Berlin. Soviet soldiers took their flag in victory and raised it over the rooftops of the bombed-out Reichstag.

On August 6, 1945, the Enola Gay dropped the world’s first atom bomb over the city of Hiroshima. The bomb exploded 2,000 feet above Hiroshima with an impact equal to 12-15,000 tons of TNT. This photograph captured the mushroom cloud. Approximately 80,000 people died immediately, with tens of thousands more dying later due to radiation exposure. In the end, the bomb wiped out 90 percent of the city.