Berlin, the capital of Nazi Germany, was subject to 363 air raids during the Second World War. It was bombed by the RAF Bomber Command between 1940 and 1945, by the USAAF Eighth Air Force between 1943 and 1945, and the French Air Force between 1944 and 1945 as part of the Allied campaign of strategic bombing of Germany. It was also attacked by aircraft of the Red Air Force, especially in 1945 as Soviet forces closed on the city. British bombers dropped 45,517 tons of bombs; the Americans dropped 23,000 tons. As the bombings continued more and more people moved out. By May 1945, 1.7 million people (40% of the population) had fled.
When the Second World War began in 1939, the President of the United States (then a neutral power), Franklin D. Roosevelt, issued a request to the major belligerents to confine their air raids to military targets. The French and the British agreed to abide by the request, with the provision that this was "upon the understanding that these same rules of warfare will be scrupulously observed by all of their opponents".
The United Kingdom had a policy of using aerial bombing only against military targets and against infrastructure such as ports and railways of direct military importance. While it was acknowledged that the aerial bombing of Germany would cause civilian casualties, the British government renounced the deliberate bombing of civilian property, outside combat zones, as a military tactic. This policy was abandoned on 15 May 1940, two days after the German air attack on Rotterdam, when the RAF was given permission to attack targets in the Ruhr, including oil plants and other civilian industrial targets that aided the German war effort, such as blast furnaces that at night were self illuminating. The first RAF raid on the interior of Germany took place on the night of 10 – 11 May (on Dortmund). The Jules Verne, a variant of the Farman F.220 of the French Naval Aviation, was the first Allied bomber to raid Berlin: on the night of 7 June 1940 it dropped eight bombs of 250 kg and 80 of 10 kg weight on the German capital.