E. H. SIMMONS Brigadier General, U.S. Marine Corps (Ret.) Director of Marine Corps History and Museums Reviewed and Approved: 15 September 1976 Preface _U.S. Marines in Vietnam, 1954–1964_ is a narrative account of the initial decade of Marine Corps operations in South Vietnam. The monograph had two immediate forerunners, both classified studies prepared in the middle 1960s by the former Historical Branch, G-3 Division, Headquarters Marine Corps. Authored by Major James M. Yingling, Captain Harvey D. Bradshaw, and Mr. Benis M. Frank, the first of these was entitled “United States Marine Corps Activities in Vietnam, 1954–1963.” The second, entitled “United States Marine Corps Operations in the Republic of Vietnam, 1964,” was authored by Major Harvey D. Bradshaw. Although unpublished, these studies served as important sources for the material contained in this text. Otherwise, this history has been derived from official Marine Corps records, the Oral History Collection of the History and Museums Division, the comment files of the division, and appropriate historical works. Of particular value in its compilation have been the command diaries of the various Marine organizations involved. Unfortunately, few official documents relative to either the early Marine advisory program or to the early operations of the Vietnamese Marine Corps still exist. Therefore, that portion of the text which deals with those areas has been reconstructed from interviews with various former Marine advisors. Even their generous assistance, however, has not completely overcome the dearth of documentary sources. Any reader possessing a knowledge of this period and subject is invited to submit pertinent comments to the History and Museums Division. This monograph has not been the product of a single individual’s labor. A comment draft of the manuscript was reviewed by over 40 persons, most of whom were directly associated with the described events. (A list of these contributors appears as Appendix E.) Their remarks have been of immense value in reconstructing with accuracy the origin, nature, and scope of the various Marine operations. The manuscript was prepared under the editorial direction of Mr. Henry I. Shaw, Jr., Chief Historian of the History and Museums Division. Final editing and the preparation of the index was done by Mr. Charles R. Smith of the Historical Branch. Miss Kay P. Sue, editorial clerk and manuscript typist for the division, performed valuable services in typing and proof reading both the comment and final drafts. Staff Sergeant Paul A. Lloyd and Sergeant Eric A. Clark, also members of the History and Museums Division, were responsible for preparing all maps and charts. Unless otherwise credited, photographs are from official Marine Corps files. [Illustration: (Signature of) _Robert Whitlow_]