=Explanatory Note=: Unless otherwise noted the material in this monograph is derived from Admiral Ulysses S. G. Sharp, USN, and General William C. Westmoreland, USA, =Report On The War In Vietnam=, hereafter Sharp and Westmoreland, =Report On The War=; Maj John J. Cahill, USMC, and Jack Shulimson, "History of U. S. Marine Corps Operations in Vietnam, Jan-Jun65"; FMFPac, Operations of U. S. Marine Forces Vietnam, Mar67-Apr68, hereafter =FMFPac Marine Opns in Vietnam=; FMFPac, U. S. Marine Corps Forces in Vietnam Mar65-Sep67 Historical Summary, Volume I: Narrative, hereafter =FMFPac HistSum=; III MAF Command Chronologies Apr67-Apr68, hereafter =III MAF CmdChron=; 3d Marine Division Command Chronologies, Apr67-Apr68, hereafter =3d MarDiv CmdChron=; 1st Marine Aircraft Wing Command Chronologies, Apr67-Apr68, hereafter =1st MAW CmdChron=; 26th Marines Command Chronologies, Apr67-Apr68, hereafter =26th Marines CmdChron=; 1/26 Command Chronologies, Apr67-Apr68, hereafter =1/26 CmdChron=; 2/26 Command Chronologies, Jan68-Apr68, hereafter =2/26 CmdChron=; 3/26 Command Chronologies, Jun67-Apr68, hereafter =3/26 CmdChron=; 3d Marines Khe Sanh Operations After Action Report, 9Jun67, hereafter =3d Marines Khe Sanh AAR=; VMGR-152 Command Chronologies Jan68-Apr68, hereafter =VMGR-152 CmdChron=; Marine Corps Command Center, Status of Forces, Apr68, hereafter =MCCC Status of Forces=; Defense Intelligence Bulletins Dec67-Apr68, hereafter =DIA IntBul=; Six Month Evaluation Report, prepared by HQ, MACV 31May68; Presentation of LtGen Robert E. Cushman, Jr., USMC, in 1968 General Officers Symposium Book, HQMC, dtd 15Jul68; CG, FMFPac msg to CMC dtd 200327Z Mar68; Combat Operations After Action Report, Operation PEGASUS (C), hereafter =PEGASUS AAR=; Gen William C. Westmoreland ltr to CMC dtd 14Dec68, Subj: Review of the draft manuscript "The Battle of Khe Sanh Apr67-Apr68," hereafter =Westmoreland Comments=; LtGen Lewis W. Walt Interviews with HistBr dtd 17Dec67 and 14Jan69; LtGen Robert E. Cushman, Jr., USMC, ltr to Deputy Assistant Chief of Staff, G-3, HQMC, dtd 26Dec68, Subj: "The Battle of Khe Sanh, Apr67-Apr68," hereafter =Cushman Comments=; LtGen Herman Nickerson, USMC, memo to Assistant Chief of Staff, G-3, HQMC, dtd Dec68, Subj: Review of draft manuscript, "The Battle of Khe Sanh Apr67-Apr68," hereafter =Nickerson Comments=; LtGen William B. Rosson, USA, ltr to CMC dtd 18Dec68, Subj: "The Battle of Khe Sanh, Apr67-Apr68," hereafter =Rosson Comments=; LtGen John J. Tolson, III, USA, ltr to CMC dtd 21Jan69, Subj: "The Battle of Khe Sanh," hereafter =Tolson Comments=; MajGen Norman J. Anderson, USMC, ltr to HistBr, G-3 Division, HQMC, dtd 2Jan69, Subj: Khe Sanh Historical Monograph, hereafter =Anderson Comments=; MajGen Louis Metzger, USMC, memo to Assistant Chief of Staff, G-3, HQMC, dtd 23Dec68, Subj: "The Battle of Khe Sanh, Apr67-Apr68," hereafter =Metzger Comments=; MajGen John R. Chaisson comments on draft