Colonel Dawson, Commandant of Fort Hill, was a strict disciplinarian. An officer of the old school who assumed his responsibilities as a sacred trust, and expected every man under his command to do the same. Among themselves, the men called him Old Rockheart, because of his unbending attitude towards military regulations at all times. Only two things counted in life to Colonel Dawson; his command, and his only son Bob, who was a Private in the ranks of his father's regiment...