The Battle for Czech Radio was a major part of the Prague uprising during World War II. Plans for the liberation of the radio station were prepared by Captain Valter in late April 1945. Captain Palička and Captain Valter grouped their forces so as to attack the building.
Prague's policemen entered the building several at a time, to assess the situation under cover of preparing a broadcast. The attack begun with the code broadcast "Je právě sechs (sic) hodin" ("It is 6 o'clock now"), with the German word for six substituted for the Czech one. In the building were about 90 heavy armed German soldiers of Waffen SS.