The Berlin Airlift.

After the Fall of Germany, the Continent of Europe was divided amongst the victors of the war. The Allied powers reinstated democratic governments in the areas that the Allied powers controlled. Meanwhile, the Eastern Bloc instated communist governments in Poland and much of the Balkans. German, however, was split between America, France, the UK, and the Soviet Union. Berlin itself deep inside the Soviet Sector was itself divided between the 4 powers. The east gradually became the German Democratic Republic or East Germany and the west became the Federal Republic of Germany or West Germany.
West Berlin gradually formed from the Allied powers Sectors that were merged. West Berlin became a Democratic Island separated from the rest of West Germany by about 100 miles of communism. The only way supplies could reach this democratic stronghold was by a few narrow passageways of rail, road, canal, and air.
After the war ended the relations between the two ideological blocs quickly deteriorated. Stalin wanted to capture the entirety of Berlin in an effort to project his own power and to capture a valuable strategic and economically important location. In order to do so, the Soviets planned to starve the allies out of Berlin by cutting of Road, Rail, and Canal access to the city in order to advance the banner of communism. The US now following a new policy of containment towards communism under the Truman doctrine, wanted to stop communism at any cost. They feared a domino effect where if one country fell to communism the revolution would spread to country after country after country.
The Soviets began their blockade of the city on 24 June 1948 cutting off all land and water access to the city. At first, their plan seemed to be working the allies were running on a dangerously low amount of supplies, and it looked as if they would soon be starved out of the city. However, the Soviets did not count on the Air supply of the city.
The Allied powers devised a daring plan to supply the city with food, medicine, and other living necessities. The Allies would fly massive C-47 skytrains into Tempelhof airport from the Rhein am Main airport from "mainland" West Germany. Pilots would fly 3 8 hour shifts and deliver a supply drop once every 3 minutes at its most efficient. The blockade lasted until 12 May 1949 when the Soviets realized that the Allies could now supply the city continuously and allowed rail, road, and canal access once again. It was a success for the west and symbolized the allies ability to hold strong against communism expanding their projection of power.
 zone of control in Occupied GermanyTempelhof airport with C-47 skytrains ready to unload
https://en.wikipedia.org/wiki/Berlin_Blockade#Start_of_the_Berlin_Airlift