They circulated figures of 400,000 Serbs ( Alexander Lehr ) ; 350,000 Serbs ( Lothar Rendulic ) ; between 300,000 ( Edmund Glaise von Horstenau ) ; more than `` 3\/4 of a million Serbs '' ( Hermann Neubacher ) in 1943 ; 600-700 ,000 until March 1944 ( Ernst Fick ) ; 700,000 ( Massenbach ) . They circulated figures of 400,000 Serbs ( Alexander Lehr ) ; 350,000 Serbs ( Lothar Rendulic ) ; between 300,000 ( Edmund Glaise von Horstenau ) ; more than `` 3\/4 of a million Serbs '' ( Hermann Neubacher ) in 1943 ; 600,000 â `` 700,000 until March 1944 ( Ernst Fick ) ; 700,000 ( Massenbach ) .