This could make use of Ral Partha's Egyptian Sudan mounted Chainmail--doing double duty as Dervish. "Stewart's sword-armed troopers could not reach the Ansar spearmen on the ground and were charged in turn by a squadron of Sudanese horse, well-mounted Baggara tribesmen, many clad in chainmail, wielding sword and spear." From Robin Neillands' The Dervish Wars.