The industrial efficiency of the Holocaust was ensured by an American corporation that turned genocide into a data-processing task.
🕰️ In 1933, three months after Hitler’s rise to power, the offices of Deutsche Hollerith Maschinen Gesellschaft in Berlin began preparations for the most extensive population census in German history. Engineers from Dehomag—a subsidiary of the American IBM, which owned 90% of its shares—were configuring Hollerith punch-card machines to process data on 41 million Germans. The technology was elegant: a cardboard card with punched holes, each encoding a single attribute of a person—gender, age, occupation, place of residence. And religion. Column 22 on the punch card denoted "Jew by faith," column 23—"Jew by descent." The Hollerith machines could sort thousands of cards per hour, isolating the desired categories of citizens with mechanical ruthlessness. What once required months of manual labor by clerks now took days. The 1933 census became the first step in creating the industrial infrastructure of genocide—and IBM provided not just the equipment, but the full cycle of technical support.
⚙️ Thomas Watson Sr., president of IBM, knew exactly what his technology was being used for. In 1937, he personally traveled to Germany, where he was received with honors: at a banquet in Berlin, Hitler awarded him the Order of the German Eagle—the Third Reich’s highest decoration for foreigners—for "services to the German economy." Watson did not refuse. By that time, Dehomag was processing not only census data but also information on confiscated Jewish property, deportations, and Reichsbahn transport routes. Hollerith machines were installed in concentration camps: on prisoners’ punch cards, column 8 encoded the reason for arrest, and code "8" meant "Jew." This was not technological neutrality—it was technological complicity. IBM didn’t just sell machines: Dehomag’s monopoly on servicing meant that only IBM engineers could repair the equipment, calibrate the sorters, and supply proprietary punch cards. Every punch card punched in Auschwitz, Dachau, or Buchenwald generated revenue for IBM. Genocide became a business model.
🔢 The Hollerith system operated on the principle of electromechanical reading: a punch card passed through a sorting machine, where metal brushes touched the cardboard. Where there was a hole, the brush completed an electrical circuit, and a relay mechanism directed the card into the appropriate tray. Processing speed reached 25,000 cards per hour—an unimaginable productivity for pre-war bureaucracy. Each column on the card corresponded to a specific attribute: column 1—male or female, column 3—age, column 6—citizenship. But the most important were columns 22 and 23: they isolated Jews from the general population with a precision no handwritten filing system could achieve. The 1939 census, conducted on the eve of war, already used upgraded D11 machines—a model developed by IBM specifically for the German market, with an expanded 80-column punch card and built-in counters for data aggregation.
💼 Dehomag was no ordinary subsidiary: its director, Willy Heidinger, managed on-site operations, but technological control remained in IBM’s hands. Patents for Hollerith machines, punch-card presses, sorters, and tabulators belonged to the parent corporation in New York. German clients—Reichsstatistisches Amt (Imperial Statistical Office), SS, Gestapo, Reichsbahn—could not use the equipment without constant technical support. Punch cards were manufactured at Dehomag’s factory in Berlin-Lichterfelde, but the molds and production technology were IBM’s property. This created a closed ecosystem: every new census, every deportation, every Reichsbahn shipping manifest required new cards, new machines, new contracts. By 1939, Dehomag managed a fleet of over 2,000 machines installed in government agencies, military structures, and concentration camps. IBM’s profits from German operations grew even after the war began: through the Swiss shell company Watson Business Machines and Swedish subsidiaries, the corporation continued to receive patent royalties and service income until 1941, when the U.S. entry into the war severed the direct link.
📊 In the concentration camps, the system worked with industrial precision. A prisoner’s punch card contained 16 main columns: personal data, barrack number, work assignment, reason for arrest. Column 8 with code "8" meant "Jew," code "12"—"Gypsy," code "3"—"homosexual." Hollerith machines in the camps’ administrative blocks sorted inmates for labor assignments, medical experiments, extermination. Death was recorded by punching an additional hole in the "status" column. This data was aggregated in monthly reports, which IBM tabulators processed for the SS-Wirtschafts-Verwaltungshauptamt—the SS’s Main Economic and Administrative Office. IBM’s technology turned the Holocaust into a resource-optimization problem: how many prisoners arrived, how many died, how many could work. Genocide became a manageable process, where every victim was a line of data on a punch card.
🕵️ When Japan attacked Pearl Harbor on December 7, 1941, and Germany declared war on the U.S. four days later, IBM faced a problem: direct contact with Dehomag became impossible. But technological control didn’t disappear—it mutated. Historian Edwin Black, author of IBM and the Holocaust (2001), discovered documents in Swiss archives confirming that IBM continued to receive financial payments through the neutral Watson Business Machines in Geneva and Swedish structures until 1941. Patent fees, equipment rental income, service payments—all passed through a multilayered system of shell companies, legally independent of the American parent corporation. Dehomag formally remained a German company, but its technological dependence on IBM didn’t vanish: without spare parts, new punch cards, or repair instructions, Hollerith machines became useless scrap metal.
🏦 After the war, IBM faced no legal consequences. As part of the restitution program, the Allies returned Dehomag’s assets—factories, equipment, patents—to the corporation. Thomas Watson Sr. publicly stated that he had returned the Order of the German Eagle in 1940 in protest against Hitler’s anti-Semitic policies—but no documentary evidence of this exists. IBM’s archives on its German operations from 1933–1945 remained sealed until the early 2000s. When Black published his book, IBM issued a cautious statement criticizing his methodology but did not dispute the specific facts: yes, Dehomag supplied equipment for the census; yes, the machines were used in concentration camps; yes, the corporation profited. Legally, IBM was protected: control over Dehomag had been lost after 1941, and there was no direct evidence that the parent corporation knew the technology was being used for genocide.
⚖️ In 2001, a group of concentration camp survivors filed a lawsuit against IBM under the Alien Tort Claims Act—a law allowing foreigners to sue American companies for complicity in international crimes. The suit was withdrawn a year later without explanation. In 2004, the Swiss organization GIRCA (Gypsy International Recognition and Compensation Action) filed a new lawsuit in Bern, accusing IBM of complicity in the genocide of Roma through the use of punch-card systems for identification and deportation. The Swiss court dismissed the case on statute-of-limitations grounds: the events occurred over 60 years ago, witness testimony was insufficiently compelling, and archival documents were incomplete. IBM avoided a trial that could have set a precedent for corporate accountability for technological complicity in war crimes.
🔗 Dehomag’s infrastructure outlived the Third Reich. After 1945, Hollerith equipment used to track deportations was repurposed for censuses of refugees. Machines that had sorted concentration camp inmates now processed data on displaced persons. The technology proved ideologically neutral: the punch card had no memory, the sorter felt no remorse. IBM returned to Germany as a liberator, supplying computers for Europe’s economic reconstruction. By the 1950s, Dehomag had become IBM Deutschland, one of the corporation’s largest European subsidiaries. The history of 1933–1945 became a footnote in corporate mythology: a tragic misunderstanding, a technological tool in the hands of a criminal regime.
🌐 But the question of responsibility didn’t disappear. IBM knew what its machines were being used for. Dehomag engineers visited concentration camps to install and service equipment. Financial reports contained data on contracts with the SS and Gestapo. Watson personally accepted an award from Hitler in 1937, when the scale of Nazi repression was already obvious. The corporation didn’t break American laws—until 1941, trade with Germany was legal—but legality is not morality. IBM turned genocide into an optimized process, where every victim was a data point, every deportation a transaction, every death a record on a punch card. It wasn’t a malicious conspiracy—it was worse: corporate pragmatism, where profit outweighed the context of how the technology was applied.
📌 Today, the story of IBM and the Holocaust serves as a warning for the modern tech industry. In 2019, Amazon faced internal employee protests over the sale of its facial recognition system, Rekognition, to U.S. law enforcement and foreign governments—critics argued the technology could be used for mass surveillance and persecution of minorities. In 2020, IBM announced it would stop developing general-purpose facial recognition software, citing risks of racial bias and abuse. In 2021, a consortium of Human Rights Watch and Privacy International published a report on Western companies selling censorship and social control technologies to authoritarian regimes in China, Saudi Arabia, and the UAE. The question remains the same: is a corporation responsible for how its product is used? The punch card of 1933 has evolved into the machine-learning algorithm of 2026, but the dilemma hasn’t changed.
🌍 In 2023, the European Parliament adopted the AI Act—the world’s first law regulating artificial intelligence, banning social scoring systems and mass biometric identification in public spaces. In 2024, the Stanford Internet Observatory published a study on the role of cloud providers—Microsoft Azure, Google Cloud, AWS—in supporting the digital infrastructure of regimes that violate human rights. The lesson of IBM’s history is that technological neutrality is an illusion. The Hollerith machine didn’t kill people, but it made killing efficient. An algorithm doesn’t pass judgment, but it decides who ends up on a watchlist. The punch card with code "8" has long since become a museum exhibit, but its legacy lives on every time a corporation chooses profit over responsibility, selling technology to the highest bidder—regardless of what it will be used for.