The War That Would Not End is the product of a collaboration of two career Marines, who brought a total of 42 years of service experience to the project while assigned to the History and Museums Division of Headquarters Marine Corps. This is the eighth volume of a history of Marine Corps operations in the Vietnam War and has hundreds of annotations, linked sources, pictures and charts. It has a glossary of terms and abbreviations, index, and chronology of significant events. This volume details the activities of Marine Corps units after the departure from Vietnam in 1971 of III Marine Amphibious Force, through to the 1973 ceasefire, and includes the return of Marine prisoners of war from North Vietnam. Written from diverse views and sources, the common thread in this narrative is the continued resistance of the South Vietnamese Armed Forces, in particular the Vietnamese Marine Corps, to Communist aggression. This book is written from the perspective of the American Marines who assisted them in their efforts. Someday the former South Vietnamese Marines will be able to tell their own story. By July 1971, less than 500 U.S. Marines, mostly advisors, communicators, and supporting arms specialists remained in Vietnam. It was thought at the time that the success of and "Vietnamization and " of the war would lessen even this small number, as it was hoped that the South Vietnamese could continue fighting successfully. This hope vanished in spring 1972, dashed by a full-scale North Vietnamese Army invasion. The renewed combat saw the U.S. Marines return once more to Southeast Asia in a continuation of the war that now seemed to have no end. The fighting proceeded into the fall, and only ceased with the signing of peace accords in Paris in January 1973. Some topics covered are: Vietnamization; the Spring Offensive; the Ceasefire Campaign; The Defense of Dong Ha; Battered Quang Tri Holds; The Defense of Hue City; On Yankee Station; Support to the Air Force, MAG-15 Operations; Task Force Delta; Leadership, Morale, and Readiness; Beans, Bullets, and AvGas: Logistics; Operation Countdown; Combatants or Hostages?;Operation Homecoming; MIAs: The Joint Casualty Resolution Center; Code of Conduct; Operation End Sweep; Command and Staff List Marine Advisory Units; Marine Air Group 12; Marine Air Group 15; Marine Medium Helicopter Squadron 164 (HMM-164); Marine Attack Squadron 211 (VMA-211); Marine Fighter Attack Squadron 212 (VMFA.212); Marine All Weather Attack Squadron 224 (VMA[AW].224); Marine Fighter Attack Squadron 232 (VMFA-232); Marine Attack Squadron 311 (VMA.311); Marine Fighter Attack Squadron 333 (VMFA-333); Marine Attack Helicopter Squadron 369 (HMA.369); Marine Heavy Helicopter Squadron 463 (HMH-463); Marine All Weather Attack Squadron 533; Lists of Marine prisoners-of-war and missing-in-action; Vietnamese Marine Corps (VNMC).