The Secret Radio That Helped Save Buchenwald Prisoners

In the spring of 1945, Nazi Germany was collapsing. Allied armies were advancing from every direction, and the leaders of the Third Reich knew the end was near.

Yet for prisoners in the concentration camps, those final weeks were among the most dangerous. As the Allies approached, the SS began evacuating prisoners on brutal death marches. In other places, they murdered prisoners in an effort to erase evidence of their crimes before the camps could be liberated.

At Buchenwald, one of the largest concentration camps in Germany, preparations for evacuation had already begun. Tens of thousands of prisoners realized that if they were forced onto the death marches, few would survive.

Inside the camp, however, a courageous underground resistance was preparing a desperate plan.

An Impossible Mission

At the heart of the operation were two prisoners: Polish engineer Gwidon Damazyn and Soviet prisoner of war Konstantin Leonov.

They believed there was only one hope of saving the camp: somehow contacting the advancing Allied forces.

It sounded impossible.

Every electronic component inside the camp was closely monitored. Anyone caught building a radio transmitter faced torture and immediate execution.

Even so, the two men quietly began collecting materials.

Working inside the Gustloff Werke factory located within the camp, they secretly smuggled out copper wire, vacuum tubes, electronic components, and other parts. Piece by piece, they hid the materials and gradually assembled a functioning radio transmitter.

The device, known as L-S-1, was small enough to fit inside a modest aluminum box.

The Last Place Anyone Would Search

Building the transmitter was only half the challenge.

Finding a safe place to hide it seemed almost impossible.

Eventually, the resistance chose an unexpected location: the camp's pathology department.

The room, where autopsies were performed on prisoners who had died from starvation, disease, or torture, carried the overwhelming smell of death. German guards avoided lingering there whenever possible.

Beneath the floorboards, the underground carefully concealed the transmitter.

Outside, a thin antenna was stretched between barracks and disguised as nothing more than an ordinary clothesline.

One Chance to Be Heard

For weeks, the underground waited.

They knew they would likely have only one opportunity to transmit their message. If the Germans discovered the broadcast, everyone involved would almost certainly be executed.

That moment came on April 8, 1945.

The SS had begun evacuating large numbers of prisoners, raising fears that tens of thousands would soon be forced onto death marches.

At 12:10 p.m., Damazyn and Leonov switched on the transmitter.

Their message was brief but urgent:

"To the Allies. To General Patton's army. This is Buchenwald concentration camp. SOS. We request help. They want to evacuate us. The SS want to destroy us."

The message was transmitted in English, German, and French.

Then they waited.

The Reply That Changed Everything

For several agonizing moments, there was only silence.

No one knew whether the message had reached anyone.

Then, just three minutes later, Morse code came through the headphones.

The response came from the headquarters of the United States Third Army:

"Buchenwald concentration camp. Hold out. Rushing to your aid."

For prisoners who had spent years completely isolated from the outside world, the reply was almost beyond belief.

After witnessing friends disappear day after day and enduring unimaginable suffering, they finally knew that someone had heard them.

Help was coming.

The Prisoners Rise Up

The news spread quietly from barracks to barracks.

Although whispered in secret, its impact was enormous.

The underground intensified its preparations. For years, resistance members had hidden weapons beneath floorboards and in carefully concealed hiding places.

Now they knew the Americans were close.

On April 11, 1945, the prisoners launched an open uprising.

They attacked guard posts, seized watchtowers, and overpowered several of the remaining SS guards.

For the first time since Buchenwald had been established, the prisoners themselves took control of the camp.

Only a few hours later, American armored forces arrived at the gates.

What they found was extraordinary.

The prisoners had already begun liberating themselves.

By risking everything to contact the Allies and by launching their own resistance, the inmates not only reclaimed a measure of their human dignity but may also have helped prevent the mass murder of thousands of fellow prisoners in the camp's final days.