1951) Maj Ralph “C” Rosacker (from 21 Jul) Maj John P. Lanigan (from 4 Mar 1952) S-4 Maj Thomas T. Grady (to 27 Apr 1951) Capt Augustine B. Reynolds, Jr. (from 28 Apr) Maj Thomas A. Burns (from 5 Jul) Maj John L. Kelly (from 5 Oct) Maj Fletcher R. Wycoff (from 27 Dec) Commanding Officer, Headquarters and Service Company Maj Robert K. McClelland (to 11 Mar 1951) Maj Carl E. Walker (from 12 Mar) Capt George E. Petro (from 11 May) 1stLt Roscoe L. Barrett, Jr. (from 15 Aug) 1stLt James L. Burnett (from 3 Oct) Capt James P. Egan (from 23 Feb 1952) Commanding Officer, Anti-Tank Company Capt George E. Petro (to 10 May 1951) 1stLt John A. Dudrey (from 11 May) 1stLt Magness W. Marshall (from 2 Oct) Capt Frederick A. Hale (from 27 Nov) Commanding Officer, 4.2 Inch Mortar Company Capt Frank J. Faureck (to 8 Feb 1951) 1stLt Edward E. Kauffer (from 9 Feb) Capt Otis R. Waldrop (from 5 Mar) Capt Edward E. Kauffer (from 4 Jun) 1stLt Robert W. Jorn (from 9 Aug) 1stLt Thomas J. Holt (from 2 Oct) Capt Robert G. Cadwallader (from 23 Dec) Capt George E. Lawrence (from 18 Mar 1952) _1st Battalion, 1st Marines_