He was successful again at the Battle of Höchst on 20 June and was made a count ("Graf" in German) for this victory. These three battles in two months allowed him to capture the city of Heidelberg following an eleven-week siege on 19 September. Christian the Younger of Brunswick, whom he had already defeated at Höchst, raised another army, but again lost to him at the Battle of Stadtlohn, where 13,000 out of his army of 15,000 were lost, including fifty of his high-ranking officers. Together with the complete surrender of Bohemia in 1623, this ended virtually all resistance in Germany.