After sealing off free passage between East and West Berlin with barbed wire, East German authorities begin building the Berlin Wall to permanently close off access to the West.
The end of World War II in 1945 saw Germany divided into four Allied occupation zones. Berlin, the German capital, was likewise divided into occupation sectors, even though it was located deep within the Soviet zone. The future of Germany and Berlin was a major sticking point in postwar treaty talks, and tensions grew when the United States, Britain, and France moved in 1948 to unite their occupation zones into a single autonomous entity–the Federal Republic of Germany (West Germany). In response, the USSR launched a land blockade of West Berlin in an effort to force the West to abandon the city. However, a massive airlift by Britain and the United States kept West Berlin supplied with food and fuel, and in May 1949 the Soviets ended the defeated blockade.
By 1961, Cold War tensions over Berlin were running high again. For East Germans dissatisfied with life under the communist system, West Berlin was a gateway to the democratic West. Between 1949 and 1961, some 2.5 million East Germans fled from East to West Germany, most via West Berlin. By August 1961, an average of 2,000 East Germans were crossing into the West every day. Many of the refugees were skilled laborers, professionals, and intellectuals, and their loss was having a devastating effect on the East German economy. To halt the exodus to the West, Soviet leader Nikita Khruschev recommended to East Germany that it close off access between East and West Berlin.
On the night of August 12-13, 1961, East German soldiers laid down more than 30 miles of barbed wire barrier through the heart of Berlin. East Berlin citizens were forbidden to pass into West Berlin, and the number of checkpoints in which Westerners could cross the border was drastically reduced. The West, taken by surprise, threatened a trade embargo against East Germany as a retaliatory measure. The Soviets responded that such an embargo be answered with a new land blockade of West Berlin. When it became evident that the West was not going to take any major action to protest the closing, East German authorities became emboldened, closing off more and more checkpoints between East and West Berlin. On August 15, they began replacing barbed wire with concrete. The wall, East German authorities declared, would protect their citizens from the pernicious influence of decadent capitalist culture.
The first concrete pilings went up on the Bernauer Strasse and at the Potsdamer Platz. Sullen East German workers, a few in tears, constructed the first segments of the Berlin Wall as East German troops stood guarding them with machine guns. With the border closing permanently, escape attempts by East Germans intensified on August 15. Conrad Schumann, a 19-year-old East German soldier, provided the subject for a famous image when he was photographed leaping over the barbed-wire barrier to freedom.
During the rest of 1961, the grim and unsightly Berlin Wall continued to grow in size and scope, eventually consisting of a series of concrete walls up to 15 feet high. These walls were topped with barbed wire and guarded with watchtowers, machine gun emplacements, and mines. By the 1980s, this system of walls and electrified fences extended 28 miles through Berlin and 75 miles around West Berlin, separating it from the rest of East Germany. The East Germans also erected an extensive barrier along most of the 850-mile border between East and West Germany.
In the West, the Berlin Wall was regarded as a major symbol of communist oppression. About 5,000 East Germans managed to escape across the Berlin Wall to the West, but the frequency of successful escapes dwindled as the wall was increasingly fortified. Thousands of East Germans were captured during attempted crossings and 191 were killed.
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For more more details and images from events in 1961 check out [History0x](https://history0x.com/1961)