Gallant Warrior: The date of this photo, “Review of Col. William Dwight’s ‘Excelsior Brigade,’” is unknown. Seriously wounded leading 1st Excelsior at Williamsburg, Va., in May 1862, Dwight was left for dead on the field and captured. After being exchanged in November 1862, he was promoted to brigadier general and spent the next year and a half in the Western Theater. (Library of Congress)