Battle of Hamburger Hill the steeply-sloped hill against well entrenched troops. Attacks were repeatedly repelled by the PAVN defenses. Bad weather also hindered operations. Nevertheless, the Airborne troops took the hill through direct assault, causing extensive casualties to the PAVN forces. The battle took place on Dong Ap Bia (Ap Bia Mountain, ) in the rugged, jungle-shrouded mountains of South Vietnam, from the Laotian border. Rising from the floor of the western A Sầu Valley, Ap Bia Mountain is a solitary massif, unconnected to the ridges of the surrounding Annamite range. It dominates the northern valley, towering some above sea level. Snaking down from
Battle of Hamburger Hill party was quickly able to discern the minimal enemy strength. The 2/3 commanding officer decided to exploit the situation, and attack in advance of the other units. The 2/3 reached the crest of Hamburger Hill around 10:00, ahead of the 3/187th, but was ordered to withdraw from the summit, allied artillery was to be directed on to the top of the hill. The opportunity to threaten the PAVN lines facing the 3/187th was lost. Shortly after the 2/3 completed their withdrawal, the 3/187th was able to break through the PAVN defenses and occupy the summit. As it had no real