Berlin surrendered to Soviet forces sixty years ago today and Yevgeny Khaldei took his famous photo of the Soviet flag on the roof of the Reichstag.
Officially the photo was taken when the Reichstag fell on April 30'th.
A special order had been issued to the Russian troops in front of the Reichstag, that the Red flag of the Soviet Union was to fly over it on May 1'st, regardless of the cost.
This of course had great symbolic meaning to the Soviet state with May 1'st being the international workers day.
The Reichstag was heavily defended by the remains of Hitlers personal SS-guard, even after he committed suicide on April 29'th, so in fact fighting inside the building continued untill May 2.
If you look closely at the photo you can see people walking around casually in front of the building so the photo was probably taken a few days after the fighting ended.