Book excerpt: The inclusion of the Ninth Cavalry and three other African American regiments in the post-Civil War army was one of the nation's most problematic social experiments. The first fifteen years following its organization in 1866 were stained by mutinies, slanderous verbal assaults, and sadistic abuses by their officers. Eventually, however, a number of considerate and dedicated officers, including Major Guy Henry, Captain Charles Parker, and Lieutenant Matthais Day, in cooperation with capable noncommissioned officers such as George Mason, Madison Ingoman, and Moses Williams, created an elite and well-disciplined fighting unit that won the respect of all but the most racist whites.