How the Berlin Wall Divided a City Overnight | HISTORY By: Dave Roos Cold War How the Berlin Wall Divided a City Overnight On August 13, 1961, Berlin woke up to a city divided by barbed wire and armed guards. Dave Roos Construction crews of the National People’s Army of the German Democratic Republic erecting the Berlin Wall. Gamma-Keystone via Getty ImagesPublished: July 24, 2026Last Updated: August 12, 2026 After the Allied victory in World War II, Germany was divided into four occupation zones administered by the United States, France, Britain and the Soviet Union. The same thing happened in Germany’s capital Berlin, where the city was partitioned into four sectors, each run by a different Allied power. Germany was never supposed to be split into two countries—communist East Germany and democratic West Germany—but that’s exactly what happened when Cold War tensions grew between the United States and the Soviet Union. In 1952, Joseph Stalin closed the 855-mile border between East and West Germany, but Berlin remained a “loophole.” For almost a decade, there was no border between East and West Berlin, and people moved freely across the city for work and to visit family. Berlin was also the crossing point for millions of refugees fleeing East Germany for a better life in the West, a fact that angered East Germany’s hardline communist leader Walter Ulbricht. The open door to West Berlin slammed shut overnight on August 13, 1961, when tens of thousands of East German soldiers and police encircled West Berlin with barbed wire. When Berliners woke up the next morning, their city was slashed in two and anyone attempting to cross the barrier was shot on sight. It was the birth of the Berlin Wall. How East Germans Risked Everything to Escape the Berlin Wall Uncover the realities of life in East Germany, from daily struggles and state surveillance to the enduring spirit that shaped its unique cultural identity and history. Two Germanies, One Berlin Before that fateful night in 1961, Berlin was “one city,” says Hope Harrison, a history professor at George Washington University. “You could walk from East Berlin to West Berlin, you could take a bus, and you could take the metro. Lots of people in Berlin lived in one part of the city and worked in the other or lived in one part and went to school in the other. Everyone had a grandma or a sister on the other side." Each day, more than 60,000 East Germans commuted to jobs in West Berlin. That’s because the West German economy was booming, thanks in part to more than $1 billion in American aid via the Marshall Plan. “West Germany was called the ‘economic wonder,’ and they needed labor,” says Harrison, author of Driving the Soviets up the Wall: Soviet-East German Relations, 1953-1961. “So a lot of people from the East got jobs in the West, which drove the East German leader Walter Ulbricht nuts.” For years, Ulbricht begged the Communist Party leadership in Moscow for permission to close the border between East and West Berlin. The daily border-crossers (called Grenzgängers) were only the tip of the iceberg. The much bigger issue was the 200,000 to 300,000 East Germans defecting to the West through Berlin every year. The faltering East German economy couldn't hemorrhage workers for much longer. The reply from Moscow was always no. Despite the open hostilities of the Cold War, the Soviets had signed a postwar agreement with the other Allies that they weren’t willing to break. Nikita Khrushchev, who rose to power after Stalin’s death, told Ulbricht that he needed to convince East Germans to stay by showing them the superiority of Soviet communism. The Berlin Crisis Boils Over Berlin had always been a flashpoint of the Cold War. The city is located deep inside East Germany, which means that West Berlin was separated from the rest of West Germany by 110 miles. In 1948, Stalin ordered the Berlin Blockade, which cut off all overland supply routes to West Berlin. West Berlin survived the 11-month ordeal thanks to the Berlin Airlift, in which Allied planes flew in food and provisions to the city. Then in 1958, Khrushchev issued an ultimatum to President Dwight D. Eisenhower and other Allied leaders to withdraw all troops from West Berlin and recognize the sovereignty of East Germany. Their refusal triggered the Berlin Crisis, a period of heightened tensions that coincided with the U-2 spy plane incident and the failed Bay of Pigs invasion of Cuba under John F. Kennedy. “People were afraid that if there was going to be a third world war, it was going to start in Berlin,” says Harrison. War seemed like a real possibility in June 1961, when Kennedy and Khrushchev met in Vienna for a disastrous summit. Instead of resolving the Berlin standoff, Kennedy refused to move American troops and Khrushchev threatened to cut off West Berlin with another blockade. Both men vowed that any aggression on the other’s part would be an act of war. “I never met a man like this,” Kennedy told Hugh Sidey of Time magazine. “[I] talked about how a nuclear exchange would kill 70 million people in 10 minutes, and [Khrushchev] just looked at me as if to say, ‘So what?’” After the failure of the Vienna talks, the steady stream of East German refugees into West Berlin became a torrent. “For the rest of June, July and August, more than 1,000 East Germans left every day,” says Harrison. “There's a long German word, Torschlusspanik, which means ‘panic at the doors closing.’” Ulbricht sent an urgent message to Khrushchev warning that if the border with West Berlin remained open, “collapse was inevitable.” After seven years, Ulbricht finally got the green light: Shut it down. ‘Operation Rose’ Commences August 12 was a Saturday in the heat of the German summer, when many Berliners took vacations in the countryside. That’s why Ulbricht chose it as the launch date for Operation Rose, his top-secret mission to cordon off West Berlin overnight. At 1 a.m. on August 13, the streetlights in Berlin went dark as tens of thousands of East German troops quietly rolled into position at every intersection, park and public square connecting East and West Berlin. Starting with the 27-mile internal border, the troops rolled out a thick barrier of barbed wire—Ulbricht had stockpiled more than 150 tons—in strict accordance with Khrushchev’s orders not to cross “one millimeter” into West Berlin. The next job was to cut off rail access to the West. Aboveground, train lines were severed and strung with barbed wire, while all underground stations with routes extending to West Berlin were sealed off. “They called them ghost stations,” says Harrison. “I've talked to people who lived in East Berlin and they could hear the trains running underground, but there was no stop there anymore.” By dawn, the entire 96-mile perimeter of West Berlin was surrounded by barbed wire and East German troops had closed off 193 streets, 68 border crossings and 12 train stations. Protest and Panic Berliners woke up on the morning of August 13 to a shocking scene. Their beloved city was cut in half by a 27-mile-long scar of torn-up streets and barbed wire. Armed East German soldiers were stationed at every major intersection and crossing point. Vans blared communist propaganda explaining the need for an “anti-fascist protection wall,” as it was called. In West Berlin, shock quickly turned to outrage as protesters took to the streets. In East Berlin, there was panic as families crowded onto trains only to be stopped at the border. American journalist Robert H. Lochner was in an East German train station when an elderly woman asked a police officer when the next train left for West Berlin. “That is all over,” the policeman said. “You are all sitting in a mousetrap now.” On Bernauer Strasse, a street that ran directly along the dividing line, people started leaping from windows. Their apartment buildings were in East Berlin, but the street below was technically in West Berlin. West German firefighters waited outside with nets to catch the desperate refugees. On August 22, 58-year-old Ida Siekmann became the first recorded victim of the Berlin Wall when she fell to her death trying to jump from her third-floor window. East German citizens fleeing to West Berlin. Since the early morning of August 13, 1961, it became known that GDR was separating East Berlin from West Berlin with barbed road blocks and walls. DPA/Picture Alliance/Getty Images Frieda Schulze escapes out of the window of her flat in September 1961. Her apartment building was designated to be in East Berlin, while the street in front of the building was in West Berlin. Alex Waidmann/ullstein bild/Getty Images A woman is lowered from a window in Bernauer Strasse on a rope to escape into the western sector of Berlin on September 10, 1961. Keystone/Getty Images Two days after the wall was built, 19-year-old Conrad Schumann, an East German border guard, was photographed leaping over barbed wire toward freedom. Chronos Media GmbH/ullstein bild/Getty Images Train engineer Harry Deterling stole a steam train and drove it through the last station in East Berlin, bringing 25 passengers to the west. Schöne/ullstein bild/Getty Images Wolfgang Engels, a 19-year-old East German soldier who had helped build the barbed-wire fences that initially separated both Berlins, stole a tank and drove it through the wall itself. Alex Waidmann/ullstein bild/Getty Images Despite getting caught in barbed wire and being shot twice, Engels managed to escape. Here he is pictured being treated at the West Berlin Urban Hospital. Zettler/Picture Alliance/Getty Images These men fired an arrow on a fishing line from an attic to a house across the divide. A brother then reeled in the line and connected a steel cable that the pair zipped across. Rondholz/ullstein bild/Getty Images Alfine Fuad (right) shows how he smuggled his soon-to-be-wife Elke Köller and her children through Checkpoint Charlie from East Berlin to the western part of the city on March 16, 1976. Chris Hoffmann/Picture Alliance/Getty Images A tunnel getaway near the building of the Axel Springer Publishing Company, 1962. Hilde/ullstein bild/Getty Images This picture was issued by East Berlin Communist authorities as they discovered one of the escape tunnels underneath an railway station in East Berlin. Bettmann Archive/Getty Images One of six West Berliners who dug a 20-inch-wide tunnel under a border street to East Berlin crawls out after two hours of digging. The tunnel which 28-year-old West Berliner Heinz Jercha and a tiny band of workmen built under the wall. Jercha was gunned down as he was helping East Germans escape. Bettmann Archive/Getty Images Pictured here is the opening of Tunnel 57, through which 57 people escaped to West Berlin on October 5, 1964.  DPA/Picture Alliance/Getty Images A 75 year-old woman is helped into Tunnel 57. Fuchs/Three Lions/Hulton Archive/Getty Images 57 people escaped through this tunnel between October 3-5, 1964. Pictured here is a refugee being winched up to the exit of the tunnel. Fuchs/Three Lions/Hulton Archive/Getty Images Refugees waiting at the basement exit of Tunnel 57, through which 57 East Berlin citizens escaped to the Western sector of the city. Fuchs/Three Lions/Hulton Archive/Getty Images The arrow shows the pool of blood at the spot where a man was shot during his escape attempt on September 4, 1962. DPA/Picture Alliance/Getty Images From Barbed Wire to Concrete Wall West Berliners expected the U.S. Army to intervene and tear down the barbed-wire barrier, but they were sorely disappointed. In fact, when Kennedy heard the news, he was relieved, privately telling an aide, “A wall is a hell of a lot better than a war.” Unwilling to wait for help, East Germans continued to make daring escape attempts. The Guardian reported some of the desperate scenes at the border. On S…