The 1/13 Imperial Mounted Infantry advances quickly to harass some Zulu scouts. In the opening moves of the 1879 Zulu War, each British column had at least one squadron of Imperial Mounted Infantry for rapid deployment.
Armed with the heavy hitting .45 cal. Martini Henry (officers carried a pistol, sword and if the wanted a rifle as well), the soldiers were trained to fight from the saddle if needed but were really designed for rapid movement via horse and then to dismount and fight on foot.
These are metal 25mm pieces from Minifig, I painted them for the centennial of the Zulu War in the 1970's.