In the Seven Years' War, he served as adjutant in the staff of Duke Ferdinand of Brunswick and later of Wilhelm, Count of Schaumburg-Lippe during the Spanish invasion of Portugal (1762).
In the Seven Years' War, he served as adjutant in the staff of Duke Ferdinand of Brunswick and on August 1,1759 was wounded at Minden. Later, he was on the staff of Wilhelm, Count of Schaumburg-Lippe during the Spanish invasion of Portugal (1762).