 On 19 February 1858 Herbert was made lieutenant-colonel of the 82nd (Prince of Wales's) Foot, joining that regiment at Cawnpore on 21 April 1858.He commanded the regiment's left wing in the Rohilkhand campaign (being present at the capture of Bareilly and Shahjahanpur) and then the Cawnpore and Fatehpur districts until spring 1859, as well as being sent to pursue Firuz Shah and a body of rebels on the banks of the river Jumna in December 1858.In September 1860 he left Parliament to become deputy quartermaster-general at the Horse Guards.