COL Willard A. Holbrook, 9 July 1916 - 17 August 1917 COL James J. Hornbrook, 18 August 1917 - 30 October 1917 COL E.S. Wright, 23 December 1917 - COL Alfred E. Konnington COL George H. Morgan COL John D. L. Hartman, 23 June 1919 - October 1919 COL George H. Morgan, March 1919 - 5 July 1921 COL Joseph E. Cusack, 5 July 1921 - 18 July 1921 COL George F. Hamilton, 18 July 1921 - 1 September 1921 COL Joseph E. Cusack, 1 September 1921 - 26 September 1921