In 1761, he served in Germany as deputy to John Manners, Marquess of Granby, the British commander in the army led by Ferdinand of Brunswick. At the Battle of Villinghausen in July 1761 he commanded a corps which was at the centre of the line and not attacked. He was also present at the Battle of Wilhelmsthal in June 1762, and captured the castle of Waldeck the following month. After peace preliminaries were signed at Fontainebleau in November, he supervised the embarkation of British troops from Europe, returning to England in March.