At the Battle of Minden (8 August 1759), although his role was small, he commanded the reserve cavalry. In 1760, at the Battle of Warburg, he led a cavalry charge which routed the French, losing his hat and wig in the process. In recognition of this, soldiers of the Blues and Royals (his former regiment) have the unique privilege in the British Army of being permitted to salute while not wearing headgear. Granby's losing his helmet and wig in the charge gave rise to the expression 'going bald-headed' at something.