A new historical investigation reveals the depths of depravity reached by SS guard Martin Sommer, a figure whose personal brutality at Buchenwald concentration camp was so extreme it alarmed even his own SS superiors and led to his prosecution by the Nazi regime itself. Documents and survivor testimonies paint a portrait of a man who transformed from a farm boy into a sadistic killer, evading justice for a decade after the war before facing a belated reckoning.
Sommer, born in 1915, joined the Nazi Party at sixteen and the SS at eighteen. His ideological indoctrination began at Dachau, the model for the camp system, where he was trained to view cruelty as a professional virtue. Transferred to Buchenwald in 1938, he ascended within the camp’s hierarchy, earning the moniker “The Hangman of Buchenwald” for his reign of terror in the camp’s punishment block, known as “the bunker.”
His methods of torture were inventive and horrifying. He maintained a hidden compartment under his desk for instruments, including medical needles used to inject victims with carbolic acid or air. Survivors recounted how he would keep corpses under his bed overnight. He administered brutal floggings on a whipping rack, forcing victims to count each strike and restarting the count if they faltered.
Sommer extended his cruelty into the surrounding Thuringian forest, which prisoners grimly called “the singing forest.” He would hang men from trees by their wrists until their shoulders dislocated, their screams constituting the “song.” He displayed particular venom towards clergymen, murdering priests by nailing them to trees or dousing them with water in winter to freeze.
His deviance eventually triggered an internal SS investigation. In 1941, SS judge Dr. Georg Konrad Morgen uncovered Sommer’s unauthorized killings and a network of corruption alongside camp commandant Karl Otto Koch. While Koch was executed, Sommer was court-martialed, stripped of rank, and sent to a penal unit on the Eastern Front as punishment. There, in 1944, he was severely wounded, losing a leg and the use of an arm.

Captured by Soviet forces, Sommer spent ten years as a prisoner of war before being repatriated to West Germany in 1955. He married, started a family, and attempted to live anonymously. His downfall came through his own greed when an application for increased disability benefits prompted authorities to reopen his file. In 1957, he stood trial for the murder of 53 people and the torture of thousands.
At trial, Sommer displayed chilling indifference, justifying his actions as youthful folly or claiming he stopped beatings merely because he grew tired. He was sentenced to life imprisonment in 1958, the maximum penalty under West German law at the time. Upon hearing the verdict, the once-feared hangman wept only for himself, showing no remorse for his victims. Released on medical grounds in 1971, he died in obscurity in 1988.
The case of Martin Sommer serves as a stark examination of the “banality of evil” within a system that normalized atrocity. He was not a born monster but a product of meticulous Nazi conditioning that celebrated absolute power and racial hatred. His subsequent ability to blend into post-war society underscores the challenges of delivering justice and the enduring need for vigilance against ideologies that dehumanize.
This revelation coincides with renewed scholarly focus on the mechanisms of Nazi terror, highlighting how even a regime built on systematic violence had limits it would enforce, however inconsistently. Sommer’s story is a grim reminder that the darkest chapters of history are written not only by faceless systems but by individuals who choose to embrace and exceed their murderous mandates.