...14,916 effectives for duty on the front against which my advance was made, to which should be added several commands the strength of which is not given, as the Second District of Columbia Volunteers, Captains Gibbs 's and Bradley's batteries, and Snyder's battalion of the Ninth New York Heavy Artillery. (See pages 113-116). There were, then, over fifteen thousand men available for duty in the trenches and in c...