ブライテンフェルトの戦い
As a commander, he drove out the Imperial troops under Aldringen and Fugger from Hesse. After the Protestant victory at the 1631 Battle of Breitenfeld, King Gustavus Adolphus ceded William the abbeys of Abbey, Hersfeld and Corvey as well as the prince-bishoprics of Paderborn and Münster.