Humphreys, Andrew

A. (1810-1883), was a igned to the corps of topographical engineers in 1838 and engaged in the coast survey. He served on the staff of General McClellan in 1862. He commanded a division at Fred ericks burg and Chancellorsville and a corps at Gettysburg. In 1863 he became chief of the staff of General Meade. He was chief of engineers from 1866 to 1879, when he retired.