In the spring of 1940, inside a soundproof cellar in a Soviet town called Khenan, one man pulled a leather apron over his uniform and drew a pair of gloves up past his elbows. He picked up a pistol, checked it, and waited for the first prisoner of the night. Over the next 28 nights, he would repeat that motion close to 7,000 times.
Each pull of the trigger ended a single human life. He worked to a quota. He stopped before sunrise, and when the month was over, he asked for vodka and a medal, and the state gave him both. His name was Vasilei Blan. The Soviet Union called him a loyal officer of the people. History records him as the most prolific executioner ever to have lived.
This is the story of the method he built, the regime that rewarded it, and the lie that hid it for 50 years. Blockan was born in 1895 to a peasant family in central Russia. He served in the trenches of the First World War, then threw in his lot with the Boleviks as the old empire fell apart. By the late 1920s, he had found his place inside the Soviet secret police, the body that would grow into the NKVD.
Stalin was assembling a machine of fear, and that machine needed men who would follow an order without asking why. Blockan fit the role better than almost anyone. He came to lead a small unit buried inside the security service. On paper, its title was a flat piece of bureaucracy. Its real purpose was killing.
The quiet executions the state wanted carried out away from courtrooms and witnesses. Through the worst years of Stalin’s great terror in the late 1930s when the country turned on itself and arrests came by the thousand. Men passed through Blockan’s hands night after night. Officers, writers, engineers, loyal party members who had been heroes one week and enemies the next.
He killed them all the same way with the same calm. By some counts, he had already overseen the deaths of thousands before the Polish prisoners ever arrived. Working in the same kind of room on the same kind of night year after year. Yet the assignment that would seal his name in the record was still ahead of him. It would arrive in the shape of an entire captured army.
In September 1939, while the world watched Germany pour into western Poland, Soviet forces crossed in from the east under a secret pact between the two powers. They took hundreds of thousands of Polish prisoners. Among them stood the officer class. And in Poland, the reserve officers were not only soldiers.
They were the country’s doctors, lawyers, professors, engineers, and priests. men who in peace time ran the nation’s institutions. The prisoners were held in camps at places named Kosellk, Starulk, and Oashkov. To Stalin, these men were not ordinary captives. They were the people who could one day rebuild a free Poland and stand against Soviet rule.
So, the decision was made to remove them entirely. On the 5th of March 1940, the Soviet Polit Bureau signed a single order. The Polish prisoners were to be shot. No trials, no charges read aloud. Around 22,000 men were marked for death and split among multiple killing sites. The largest hands-on share of that task came to the prison at Kalinan, and the officer placed in charge of the trigger was Blockan.
What followed was not a burst of rage. It was an assembly line run on a timet. If the names the textbooks left out are the reason you’re watching, take one second to subscribe to Army History before we go any further. We bring back the people the record tried to erase. Now, step back into that cellar. Blan understood a cold practical problem that most people never think about.
Killing thousands of people with a handgun is hard on the equipment. The standard Soviet sidearm, the Tokarev, grew hot under heavy use and began to jam. A jammed pistol meant a pause, and a pause meant the night’s count would fall short. So, he brought his own answer. He arrived with a suitcase packed with German-made Walther pistols.
The German design ran cooler through long hours of firing, stood up to the punishment, and kicked more gently against his wrist over a full night’s work. He picked a foreign weapon on purpose, a small detail that would later twist into a grim irony when the blame for the killings was first thrown at Germany.
The prisoners reached Kenan in batches, moved by rail and then by covered truck, and held in cells until nightfall. Each man was handcuffed before he was led to the room, kept calm by what looked like the routine of one more transfer. The room itself was built for the task. The walls were padded to hold the sound inside.
The floor sloped toward a drain. Felt and sawdust were laid down to soak up what the knight would leave behind. Each prisoner was brought in alone, checked against a list by name and date of birth, then led to a marked spot. Lucan stood ready behind him. One shot angled into the base of the skull, fast and final.
The men still waiting in the next room, were told nothing, kept calm by routine until their own name was called. Then the body was carried out. The floor was cleared and the next name was read. Worked out across the night. That meant a life ended every few minutes, hour after hour with no real break. The whole operation ran by the clock.
The team started in the evening and worked through the dark, stopping before first light so the trucks could move the dead to the burial pits while the town slept. The nightly target sat at around 250 men. On some nights, the count climbed past 300. Block and held that pace for nearly a month, 28 nights of it. Close to 7,000 men at Kenan alone ended by one executioner’s hand.
Counting every site tied to the operation. The toll reached roughly 22,000 Polish lives. The killings fell into three main groups. The army officers from the Kosul camp were taken to a forest near Smolinsk, a place called Kaitton that would one day give the whole crime its name. The prisoners from Starbel were shot in the city of Kark and the men Block and handled at Kenan came mostly from the Oashkov camp.
police, border guards, and prison staff rather than frontline troops. Their bodies were trucked out to pits near a village called Medinoi. Three sights, one order, the same shot to the back of the head. To keep his men from breaking, Blockan poured vodka at the end of each shift. He knew that even trained officers could not absorb what they were doing without something to dull it.
The drink was not a celebration. It was upkeep for a crew of men being worn down by their own work. When the final night ended, he gathered the team and the state handed out bonuses and decorations. For this, Blockan was honored. But 22,000 bodies leave a mark on the earth. So, how do you hide a crime that large? For 50 years, the answer was the oldest one there is.
You lie and you make everyone else repeat the lie with you. The murdered officers had families. Wives wrote letters that went unanswered. Poland’s government in exile asked again and again where its men had gone. The Soviet authorities offered nothing solid, only that the prisoners had been released or moved further east or were working somewhere out of reach.
Alive, always alive. Then in 1943, German troops fighting deep inside Soviet territory dug into the Kaitton forest near Smealinsk and found mass graves. The dead were Polish officers still in uniform, hands bound, each killed by a shot to the back of the head. Berlin broadcast the discovery to the world and pointed the finger straight at Moscow.
The Soviet reply was to turn the charge around. Moscow declared the Germans had done it. And here, the choice of those Walther pistols paid off in a way Blockan could not have planned. German ammunition in the graves let Soviet investigators wave the evidence as proof of German guilt while never admitting their own man had carried German guns into the cellar on purpose.
The lie outlasted the war. At the great postwar trials, Soviet prosecutors even tried to log Canton as a German atrocity, and much of a watchful world chose not to argue with a powerful ally turned rival. In the early 1950s, a committee of the United States Congress weighed the evidence and named the Soviets as the killers.
Yet, the finding changed nothing on the ground, buried under the politics of a new cold war. Inside Poland, naming Moscow as the killer became a punishable act. Families who knew the truth carried it in silence because saying it out loud could cost them their freedom. They knew. They simply were not allowed to speak. The silence broke in 1990.
With the Soviet system crumbling, Moscow admitted at last that the NKVD had carried out the Kaitton killings. Soon after, archive papers came to light. Among them, the March 1940 order signed at the top of the state and the reports that tracked the operation sight by sight. Inside that paperwork, Blockan’s part moved out of whispered rumor and into the historical record.
Two years later, in 1992, the new Russian government handed Poland the sealed file Kirkland had guarded as its deepest secret, the original March 1940 order, with Stalin’s signature at the top of the page. There was nothing left to deny. In 2010, Russia’s own parliament passed a formal statement naming Stalin and his inner circle as the authors of the massacre 70 years after the first shot.
Researchers began to measure the full weight of what one man had done. Estimates of his lifetime total differ from source to source, but historians place the number of people Blockan personally executed across his career in the tens of thousands. The figure at Kalanin by itself would be enough to set him apart from anyone else.
What unsettles the people who study him is not fury. It is the calm. He did not kill in a frenzy. He kept what amounted to office hours. He treated the ending of human life as a craft to be done cleanly, on time, and within budget. That ordinariness is the part that lingers. So what became of the most prolific executioner in history? No trial, no prison cell, no reckoning in a courtroom.
After Stalin died in 1953, the country slowly began to turn against the cruelties of his reign. The powerful men who had shielded Blockin lost their grip. He was pushed into retirement and stripped of the rank he had built on a mountain of the dead. The medals were quietly taken back. He died in 1955, cast aside and discredited.
The state that once decorated him now eager to pretend he had never existed. While he lived, the public never learned what his hands had done. The full truth would surface only decades after he was buried. It is easy to assume that men who commit atrocities must look the part, wildeyed, monstrous, marked somehow.
Blockan’s story takes that comfort away. He was a plain, tired-l lookinging officer who clocked in, met his numbers, drank with his crew, and went home to sleep. The horror was never in his face. It lived in the lists, the quotas, and a state that turned mass murder into a job with a deadline. The men he killed were a nation’s teachers, healers, and thinkers, university chairs, surgeons, judges, and parish priests.
a cross-section of everyone a country leans on. The plan was to cut out the part of Poland that might one day lead. The graves were meant to wipe those men from memory as well as from life. They were not wiped out. Their names were recovered. The graves were mapped. The lie was named for what it was. The shadow stretched far into our own time.
In 2010, a plane carrying Poland’s president and dozens of senior figures crashed near Smealinsk as they traveled to mark 70 years since the massacre. A nation that had buried its dead once was made to grieve the same ground all over again. The regime wanted silence. In the end, history handed the victims back their voices and turned the man who thought his work would stay hidden into one of the most documented killers of his century.
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