At midnight on 24 June 1948, the Soviet military administration in Germany cut every land and water route into the western sectors of Berlin. Roads closed. Rail traffic stopped. Barge canals were blocked. Electricity supplied from the Soviet sector was switched off.
Inside the blockade were roughly two and a half million people and, by most estimates, about a month of food and rather less coal.
Berlin lay more than a hundred and fifty kilometres inside the Soviet occupation zone. There was no land corridor that did not run through Soviet-controlled territory. The Western allies had three options: leave, force the blockade with ground troops and risk war, or supply a city of millions entirely by air — something no one had ever done.
They chose the third, and most senior planners initially thought it could not work.
How it started
Germany had been divided into four occupation zones in 1945, and Berlin, though deep in the Soviet zone, was divided the same way. The arrangement was designed for a temporary military occupation, not for a permanent political split, and by 1948 the two visions for Germany's future had become incompatible.
The immediate trigger was currency. The Western allies introduced a new Deutsche Mark in their zones to halt runaway inflation and the black market. Extending it into the western sectors of Berlin threatened to destabilise the Soviet-controlled economy around it. The Soviet response was the blockade, intended to make the Western position in Berlin untenable and force a withdrawal.
The arithmetic
Planners calculated the minimum requirement to keep West Berlin alive at roughly 4,500 tons per day: food, coal for heating and power generation, medical supplies, and raw materials to keep some industry running.
To put that in context, the largest aircraft available carried around ten tons. The C-47 workhorses carried about three. Meeting the target meant more than a thousand landings a day, sustained indefinitely, in all weather, into two — later three — airfields in a crowded city.
General Lucius Clay, the American military governor, asked the commander of US Air Forces in Europe whether it could be done. The answer, essentially, was that it had never been attempted at anything like this scale, but they would begin immediately and find out.
Turning chaos into a conveyor belt
The first weeks were improvised and inefficient. What transformed the operation was the arrival of General William H. Tunner, who had run the wartime airlift over the Himalayas into China, and who treated the problem as one of industrial process rather than heroic flying.
His rules were simple and ruthless.
- Aircraft flew on a fixed timetable at fixed altitudes and fixed speeds, stacked in layers along three air corridors — inbound on two, outbound on the third.
- Every aircraft got one approach. If a pilot missed it, he did not circle and try again; he flew back to base fully loaded. Circling aircraft were what turned a stream into a jam.
- Crews were not permitted to leave their aircraft at Berlin. Mobile canteens came to them, so turnaround time collapsed.
- Unloading was timed and competitive, with crews of German civilians — many of them women — trained to strip a transport in minutes.
- Maintenance was scheduled by flight hours with aircraft rotated back to depots, keeping availability high.
The result was a landing at Tempelhof at intervals measured in a few minutes, day and night. At peak, aircraft were touching down roughly every ninety seconds.
Tegel: an airport built in ninety days
Two airfields were not enough. In the French sector, a new airport was constructed at Tegel in under three months, largely by hand and largely by Berliners — up to 20,000 of them working in shifts, many of them women, paid partly in hot meals.
Runway aggregate came from the rubble of the bombed city. The obstacle that could not be worked around was a Soviet-controlled radio tower on the approach; after negotiation failed, the French commander had it demolished with explosives, and when asked how he could do such a thing, reportedly replied that he had done it with dynamite.
The Easter Parade
On 15–16 April 1949, Tunner ordered a maximum effort to demonstrate what the system could do. In twenty-four hours, aircraft delivered nearly 13,000 tons — most of it coal — in around 1,400 flights, with a landing on average every minute.
After the Easter Parade, daily tonnage never fell back to earlier levels. The operation had proved it could deliver more than the city had received by rail before the blockade.
Candy from the sky
A young pilot named Gail Halvorsen began dropping small parcels of sweets and chewing gum on handkerchief parachutes to children waiting by the Tempelhof fence, wiggling his wings on approach so they would know which aircraft to watch for.
What began as one pilot's improvisation became an official operation. Candy and handkerchiefs were donated in enormous quantities from the United States, and tons of sweets were dropped over the course of the airlift. Halvorsen became known as the Candy Bomber, and to a generation of Berliners the aircraft that had bombed their city three years earlier became the aircraft that dropped chocolate.
The propaganda value was incalculable, and it was not primarily manufactured. It genuinely changed how West Berliners understood who was on their side.
The cost
The airlift was not bloodless. Around seventy people died in accidents connected to the operation, including American, British and German personnel, in crashes caused by weather, fatigue and the sheer density of traffic.
Nor was life inside the blockade comfortable. Electricity was rationed to a few hours a day, often in the middle of the night. Rations were monotonous — dried potato, dried egg, dried milk, tinned meat, flour and coal in carefully measured quantities. The winter of 1948–49 was cold and dark, and people burned furniture and cut down trees in the Tiergarten.
What did not happen was surrender. Berliners were repeatedly offered ration cards if they registered in the Soviet sector; the overwhelming majority declined.
How it ended, and what it changed
The Soviet Union lifted the blockade on 12 May 1949, having achieved the opposite of its aims. Flights continued for several months afterwards to build a reserve stockpile in case the blockade returned.
Over 15 months, Western aircraft flew more than a quarter of a million sorties and delivered well over two million tons of supplies, the majority of it coal.
The political consequences were enormous. The blockade accelerated the creation of the Federal Republic of Germany in the west and the German Democratic Republic in the east. It hardened the division of Europe. And it directly contributed to the formation of NATO, whose founding treaty was signed in April 1949, while the airlift was still running.
It also completed a transformation in how West Germans and the Western allies saw one another. Four years after the end of a war in which Allied bombers had destroyed German cities, those same air forces were keeping a German city alive.
The short version
Faced with a blockade designed to starve two million people into political submission, the Western allies chose to supply an entire city by air, and then engineered the operation with such discipline that it delivered more cargo than the railways it replaced. It lasted eleven months, cost around seventy lives, ended with the blockade lifted and nothing conceded, and it drew the map of the Cold War for the next forty years.
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