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 Dungan's Hill had been shadowing Jones' movements, attempted to march on Dublin before Jones' army returned there, but covered only 19 of the 60 or so kilometres (12 of the 40 miles) before being caught at Dungan's Hill, where the Confederate forces had to form up for battle. The battle took place near the modern village of Summerhill and along the present main road between Trim and Kilcock. From a Parliamentarian point of view, victory in this battle was presented to them by the incompetence of the Irish commander. Preston was a veteran of the Thirty Years' War, where he had been