Promoted to brevet major on 8 October 1884 and to brevet lieutenant-colonel on 15 June 1885, he became the British member of the Zanzibar boundary commission in July 1885. He became Governor of the Egyptian Provinces of Eastern Sudan and Red Sea Littoral (which in practice consisted of little more than the Port of Suakin) in September 1886, and led his forces in action against the followers of the Mahdi at Handub in January 1888, when he was injured in the jaw.