The Beginning of the End (2006) Timeline Explained – Every Event in Order

The US pursued the atomic bomb to gain a strategic advantage over Nazi Germany in the arms race. American scientists learned that German researchers were also attempting to split the atom, creating urgency to develop the weapon first. President Roosevelt authorized up to two billion dollars for the Manhattan Project in 1941, framing atomic science as a matter of national security.

Foreshadowing: The scientist's warning about atomic energy's dangers early in the film hints at the moral conflict to come.

• manhattan project
• world war ii
• roosevelt
• atomic bomb development
• nuclear arms race

Hiroshima was selected as a target because it was a major military hub with significant troop concentrations and war production facilities. The city had not yet suffered extensive bombing damage, making it ideal for measuring the bomb's destructive power. Military planners believed a demonstration of the weapon's full capability would compel Japan's surrender.

• hiroshima
• bombing target
• japan surrender
• military strategy
• world war ii

Cochran was exposed to radioactive material while assembling the atomic bomb on Tinian Island in August 1945. The exposure proved fatal, and he died from radiation sickness. His death marked the first recorded fatality directly caused by handling radioactive isotopes during the bomb's production, highlighting the dangerous nature of the work.

• cochran
• radiation exposure
• tinian island
• scientist death
• atomic bomb assembly

Truman authorized the bomb's use in July 1945 believing it would force Japan's surrender without the massive casualties expected from a full-scale invasion of the Japanese mainland. Military planners calculated that conventional warfare would cost hundreds of thousands of American and Japanese lives. The weapon represented what planners saw as the fastest path to ending the war.

Foreshadowing: The newsreel's warning about atomic power's ability to reshape history foreshadows this devastating decision.

• truman
• japan surrender
• military decision
• invasion prevention
• atomic bomb use

In December 1942, scientists at the University of Chicago achieved the first controlled nuclear chain reaction under the stands of Stagg Field. This experiment proved that a nuclear bomb was technically feasible by demonstrating that uranium atoms could be split in a self-sustaining process. The event validated years of theoretical work and launched the Manhattan Project into full development.

• university of chicago
• nuclear chain reaction
• stagg field
• enrico fermi
• scientific breakthrough

Los Alamos, New Mexico was selected for its remote location, which provided secrecy and security for the top-secret Manhattan Project. The isolated desert site prevented eavesdropping from foreign agents and reduced the risk of accidental disclosure. General Leslie Groves chose the location specifically to house the scientists and resources needed to design and assemble the bomb away from populated areas.

• los alamos
• manhattan project location
• new mexico
• secrecy
• groves

Physicist J. Robert Oppenheimer praised the scientific achievement of splitting the atom but simultaneously warned of its destructive potential and moral consequences. His balanced stance throughout the film creates tension between wonder at scientific discovery and awareness of its capacity for devastation. This warning frames the entire narrative with ethical caution.

Foreshadowing: The time capsule concept at the film's beginning, meant to be opened in 2446, reflects Oppenheimer's警示 about long-term consequences.

• oppenheimer
• scientific warning
• atomic energy dangers
• moral consequences
• ethical responsibility

When President Roosevelt died in April 1945, President Harry S. Truman inherited the Manhattan Project and continued its full support. Truman was briefed on the weapon's development and maintained the project's momentum toward deployment. The transition of leadership occurred as the project moved to Los Alamos and accelerated toward completing the bomb for use against Japan.

• roosevelt death
• truman presidency
• manhattan project continuity
• presidential transition

The opening newsreel describes a time capsule buried in California to be opened in 2446, containing information about the development of atomic energy. This frame positions the film as historical document meant for future generations, emphasizing the lasting global impact of the atomic bomb. The device implies that the consequences of this discovery would extend far beyond the war itself.

• time capsule
• california
• atomic energy history
• future generations
• historical documentation

American scientists and intelligence officials feared that Nazi Germany might develop an atomic bomb first, giving Hitler a weapon of unprecedented destructive power. The race to split the atom became intertwined with the broader wartime effort to defeat the Axis powers. This urgency drove the massive funding and rapid mobilization of the Manhattan Project.

• germany
• nazi atomic program
• world war ii
• atomic race
• hitler