HENRY WASHINGTON BENHAM - (1816-1884) - Army Engineer, born in Conn. Graduated at West Point (1837). Engaged on fortifications, took part in the Mexican War, later serving on the U.S. coast survey. Made engineer of the department of Ohio at the beginning of the Civil War, fought at Carrick's Ford (1861), New Creek and Carnifex Ferry. In South Carolina and Georgia, was with the storming parties that captured James Island and Fort Pulaski, later being transferred to construction duty in the north. Brevet major-general in Army and full major-general of volunteers (1865). After the war, was engaged in engineering work, invented the picket shovel and rapid construction of pontoon bridges by means of "simultaneous bays". Directed the construction of the Patomac aqueduct and the Washington Navy Yard.