 Hanna Reitsch, his mistress and a crack test pilot, landed von Greim on an improvised air strip in the Tiergarten near the Brandenburg Gate.At Tempelhof Airport, the flak batteries conducted direct fire against advancing Soviet tanks until they were overrun.On the following day, 27 April, 2,000 German women were rounded up and ordered to help clear Tempelhof Airport of debris so that the Red Army Air Force could start to use it.