sentences:  But in October he was captured by Hessian troops and kept prisoner, until the Emperor finally defeated the Schmalkaldic League at the Battle of Mühlberg, freed Henry and reinstated him in 1547.In 1550 the mercenaries of Count Volrad of Mansfeld occupied Wolfenbüttel, and Henry again fled, this time to the Emperor's troops at Metz.But Mansfeld soon left, and Henry returned.