On 20 July 1944, a group of German military officers attempted to assassinate Adolf Hitler using a bomb hidden in a briefcase.

The man who planted the bomb was Claus von Stauffenberg, a decorated German colonel who had come to believe that Hitler was destroying Germany.

The plan nearly worked.

The explosion ripped through Hitler’s headquarters in East Prussia. Several people were killed. Many were injured.

But Hitler survived.

Within hours, the conspirators were executed.

The failed assassination attempt — known as the July 20 Plot — remains one of the most dramatic internal rebellions against the Nazi regime.

And for a brief moment that afternoon, history almost changed.

By mid-1944, the war had turned decisively against Germany.

In the east, the Soviet Red Army was pushing German forces back toward Poland after crushing defeats.

In the west, Allied troops had landed in France during D-Day, opening a second front.

German cities were being devastated by Allied bombing.

Millions had already died.

Yet Hitler refused to consider surrender.

Inside Germany’s military leadership, frustration was growing.

Many officers believed Hitler’s decisions were irrational and were leading the country toward total destruction.

Some concluded that the only way to save Germany was to remove him from power.

Claus von Stauffenberg did not begin as a resistance figure.

He was born in 1907 into an aristocratic German family and joined the army in the 1920s.

Like many officers of his generation, he initially supported Hitler’s rise.

But the reality of the war began to change his views.

While serving in North Africa in 1943, Stauffenberg was severely wounded during an Allied air attack.

He lost:

After recovering, he returned to duty — now working at the German Army High Command.

There, he gained access to Hitler’s headquarters.

And he joined a growing group of officers who believed that Hitler had to be removed.

The assassination plan was built around a military contingency plan called Operation Valkyrie.

Originally, Valkyrie was designed to deploy reserve troops in case of internal unrest.

The conspirators planned to repurpose the plan.

The strategy was simple but bold:

If successful, the conspirators hoped to negotiate peace with the Western Allies.

But everything depended on one thing:

Hitler had to die.

On 20 July 1944, Stauffenberg flew to Hitler’s headquarters, the Wolf's Lair.

He carried a briefcase containing two explosives with timers.

But because of his injuries, preparing the bomb was difficult.

Stauffenberg managed to arm only one of the explosives before the meeting began.

That mistake would become critical.

During the conference, Stauffenberg placed the briefcase under the table close to Hitler.

He then quietly left the room.

Minutes later, the bomb exploded.

The blast tore through the wooden conference hut.

Four people were killed.

Many others were seriously wounded.

For a moment, it appeared that Hitler had been killed.

But he had survived.

Several small factors saved Hitler’s life.

1. The meeting location changed.
Instead of a reinforced bunker, the meeting was held in a wooden hut with windows.

The blast pressure escaped outward.

2. The briefcase was moved.
Another officer accidentally moved the briefcase behind a heavy table leg, which shielded Hitler.

3. Only one bomb exploded.
If both explosives had detonated, the explosion likely would have killed everyone in the room.

Hitler suffered only minor injuries:

Within hours he was meeting officials again.

The assassination had failed.

Meanwhile in Berlin, the conspirators believed Hitler was dead.

Stauffenberg returned to the capital and activated Operation Valkyrie.

Reserve Army units began receiving orders.

But confusion quickly spread.

Soon the truth emerged.

Hitler was alive.

Once that became clear, the coup collapsed rapidly.

Loyal Nazi forces regained control.

That night, Stauffenberg and several conspirators were arrested at the Bendlerblock.

Shortly after midnight, they were executed by firing squad.

Stauffenberg’s final reported words were:

“Long live sacred Germany.”

Hitler responded with brutal retaliation.

The regime launched a massive purge.

More than 7,000 people were arrested in connection with the conspiracy.

Around 4,980 were executed.

Many were tried before the infamous Roland Freisler, whose trials were widely described as theatrical and cruel.

Some conspirators were:

Hitler wanted the punishment to serve as a warning.

Resistance inside Germany largely disappeared after the purge.

Historians still debate one question:

Could the war have ended earlier if Hitler had died?

If the assassination had succeeded, several possibilities emerge.

Germany’s military leadership might have attempted to negotiate peace with the Western Allies.

But there were major complications:

Even if Hitler had died, the war might have continued for months.

Still, millions of lives might have been saved.

For decades after the war, Germans debated how to remember the conspirators.

Some initially viewed them as traitors.

Today, they are widely seen as part of the German resistance to Nazism.

The site of their execution at the Bendlerblock is now the German Resistance Memorial Center.

Every year on 20 July, German officials commemorate the attempt to overthrow Hitler.

Claus von Stauffenberg remains one of the most complex figures of World War II — a man who once served Hitler but ultimately tried to stop him.

The July 20 plot shows something often overlooked about Nazi Germany:

Not everyone inside the system supported Hitler until the end.

Some officers eventually realized the catastrophic path Germany was on.

And a few were willing to risk everything to stop it.

On that July afternoon in 1944, a briefcase bomb came within a few inches of changing history.

Sometimes, the difference between history as we know it — and a completely different world — can come down to a single moment.

Photo Credits

Images used in this article are sourced from the German Federal Archives (Bundesarchiv),
U.S. National Archives, Imperial War Museums, and the German Resistance Memorial Center
via Wikimedia Commons. All images are public domain or used under open licenses.