William T. Whitmore
George W. Giet
William D. McIlvaine
May 12, 1863
William Greene
Robert O. Ford
Frank H. Beers
Henry C. Meade
George A. Baldy
Simeon Clark
June 18, 1862
George W. Flagg
Thomas J. W. Cooper
Franklin Buchanan
Robert L. May
Clayton S. Richmond
William R. Taylor
Harry F. Gibbs
William B. Murray
1862-1864
William Y. Evans