Complex sentence: At 0200 on 24 October 1944, forces of the 23rd Panzer Division reached Nagykálló, which was already occupied by the German 3rd Mountain Division.
Split into simpler sentences: At 0200 on 24 October 1944, forces of the 23rd Panzer Division reached Nagykálló. Nagykálló was already occupied by the German 3rd Mountain Division.