AHOC Aviation Headquarters Operations Center ARVN Army of The Republic of Vietnam ASOC Air Support Operation Center BLT Battalion Landing Team CG Civil Guard ChMAAG Chief, Military Assistance Advisory Group CIDG Civil Irregular Defense Group CinCPac Commander in Chief, Pacific CIP Counter Insurgency Plan ComUSMACV Commander, U.S. Military Assistance Command, Vietnam COSVN Central Office for South Vietnam CTZ Corps Tactical Zone DMZ Demilitarized Zone DRV Democratic Republic of Vietnam (North Vietnam) FAC Forward Air Controller FEC French Expeditionary Corps FMFPac Fleet Marine Force, Pacific GCA Ground Controlled Approach (system) GVN Government of Vietnam (South Vietnam) HMM Marine Medium Helicopter Squadron ICC International Control Commission JCS Joint Chiefs of Staff JGS Joint General Staff (Vietnamese) JRO Job Related Orientation (Program) JTF Joint Task Force LSG Logistics Support Group MABS Marine Air Base Squadron MAG Marine Aircraft Group MATCU Marine Airfield Traffic Control Unit MAW Marine Aircraft Wing MEB Marine Expeditionary Brigade MEU Marine Expeditionary Unit MR Military Region NLF National Liberation Front OJT On-The-Job Training (Program) PAVN Peoples Army of Vietnam PF Popular Forces RF Regional Forces RLT Regimental Landing Team RSSZ Rung Sat Special Zone RVN Republic of Vietnam (South Vietnam) RVNAF Republic of Vietnam Armed Forces SAR Search and Rescue SDC Self Defense Corps SEATO Southeast Asia Treaty Organization SLF Special Landing Force TACAN Tactical Air Navigation (system) TAFDS Tactical Airfield Fuel Dispensing System TERM Temporary Equipment Recovery Mission TRIM Training Relations Instruction Mission USMAAG (MAAG) U.S. Military Assistance Advisory Group USMACThai U.S. Military Assistance Command, Thailand USOM U.S. Operations Mission VC Viet Cong VMGR Marine Aerial Refueler Transport Squadron VNA Vietnamese National Army VNAF Vietnamese Air Force VNMC Vietnamese Marine Corps Appendix D Chronology 1954 7 May--French garrison at Dien Bien Phu surrenders to Viet Minh. 16 Jun--Ngo Dinh Diem named premier of Vietnam by French-sponsored emperor, Bao Dai.