1968
Battle of Khe Sanh
The setting
Khe Sanh Combat Base, Quang Tri Province, northwestern South Vietnam
Isolated plateau combat base ringed by hills and jungle near the Laotian border and the DMZ
Reveal the outcome
Recorded sideUnited States and South Vietnam
Recorded resultbase held; siege lifted by Operation Pegasus
PAVN forces besieged the Marine base for roughly 77 days. Massive US firepower — sustained tactical air, B-52 strikes (Operation Niagara), and artillery — broke up PAVN concentrations. The overland relief Operation Pegasus lifted the siege and the base held, though the US controversially abandoned Khe Sanh months later.
How the atlas explains it
Fixed fortifications plus overwhelming, continuously coordinated air and artillery firepower allowed a defending garrison to survive prolonged encirclement and inflict disproportionate losses on the besiegers. Comparisons to Dien Bien Phu drove intense US command attention and resources.
What followed
Symbolically potent siege that ran concurrently with the Tet Offensive and dominated US attention; debated ever since as to whether it was a genuine PAVN objective or a diversion. Demonstrated the decisiveness of US airpower in defending an isolated position.