... engineer soldiers was resumed.Besides the "School of the Sapper" as taught them before they left the United States, the men were nowinstructed, theoretically and practically, in the "School ... places, rose from the water&apos ;s edge. The road was narrow and rough; and had been obstructed by rolling immense masses ofstone upon it from the almost overhanging cliffs. These obstructions ... road was put in such condition that, by the use of drag-ropes and men at the wheels, wewere enabled to pass artillery and wagons over the obstructions; and the column moved on without furthermaterial...