The manuscript of this volume was prepared during the tenure of Colonel Frank C. Caldwell, Director of Marine Corps History, Historical Division, Headquarters Marine Corps. Production was accomplished under the direction of Mr. Henry I. Shaw, Jr., Deputy Director and Chief Historian, who also outlined the volume. Preliminary drafts were written by the late Lynn Montross, prime author of this series, and Major Hubard D. Kuokka. Major James M. Yingling researched and wrote chapters 1–6 and compiled the Command and Staff List. Lieutenant Colonel Pat Meid researched and wrote chapters 7–12, prepared appendices, processed photographs and maps, and did the final editing of the book. Historical Division staff members, past or present, who freely lent suggestions or provided information include Lieutenant Colonel John J. Cahill, Captain Charles B. Collins, Mr. Ralph W. Donnelly, Mr. Benis M. Frank, Mr. George W. Garand, Mr. Rowland P. Gill, Captain Robert J. Kane, Major Jack K. Ringler, and Major Lloyd E. Tatem. Warrant Officer Dennis Egan was Administrative Officer during the final stages of preparation and production of this book. The many exacting administrative duties involved in processing the volume from first draft manuscripts through the final printed form, including the formidable task of indexing the book, were handled expertly and cheerfully by Miss Kay P. Sue. Mrs. Frances J. Rubright also furnished gracious and speedy assistance in obtaining the tomes of official Marine Corps records. The maps were prepared by Sergeants Kenneth W. White and Ernest L. Wilson. Official Department of Defense photographs illustrate the book. A major contribution to the history was made by the Office of the Chief of Military History, Department of the Army; the Naval History Division, Department of the Navy; and the Office of Air Force History, Department of the Air Force. Military history offices of England, Canada, and South Korea provided additional details that add to the accuracy and interest of this concluding volume of the Korean series. [Illustration: (signature)] F. C. CALDWELL _Colonel, U.S. Marine Corps (Retired) Director of Marine Corps History_ Contents _Page_ I Operations in West Korea Begin 1 From Cairo to JAMESTOWN--The Marines’ Home in West Korea--Organization of the 1st Marine Division Area--The 1st Marine Aircraft Wing--The Enemy--Initial CCF Attack--Subsequent CCF Attacks--Strengthening the Line--Marine Air Operations--Supporting the Division and the Wing--Different Area, Different Problem II Defending the Line 51