NWI4887648: History of the settlers and the conquete of the West: American pioneers. The troops of Captain Grenville Mellen Dodge (1831-1916) in full operation in the West. These black cavalry regiments, formed immediately after the end of the Secession War, maintained order in the West and protected the settlers. Coloured engraving from the 19th century after an illustration by Frederic Remington. / Bridgeman Images