Includes 14 maps and diagrams. The battle at Dong Ap Bia (Hamburger Hill) occurred during Operation APACHE SNOW, a XXIV Corps directed operation in the Northern Ashau Valley. This operation was initiated on 10 May 1969 with the specific purpose of destroying North Vietnamese Army (NVA) and Viet Cong (VC) forces believed to be grouping in the Ashau Valley, blocking enemy routes of egress into Laos, interdicting enemy lines of communication and locating and destroying known enemy caches. Allied forces participating in the operation consisted of elements of the 101st Airborne Division, 3d Marine Division, and the 1st ARVN Division. Table of contents includes a background, the Battle at Dong Ap Bia (fire support, enemy losses, and U.S. casualties summaries), consideration of allegations by Senator Stephen M. Young, and a draft insert for congressional record.