 Complete the following phrase:  Lieutet Warner probably received a first-rate education in North-South politics while stationed at Fort Wise. Among the officers there at the start of the war were Maj. John Sedgwick, future commander of the Sixth Corps; William S. Walker, a Pennsylvanian who went with the Confederacy, probably because of his marriage to a Floridian; Richard Riddick, who would fall leading his 34th North Carolina at 