At 6:30 in the morning on May 12, 1966, a 14-man reinforced squad from Bravo Company, 1st Battalion, 9th Marine Regiment, left the company perimeter near the village of Bao Tran, about 15 miles southwest of Da Nang, on a routine security patrol in a broad valley east of the Vu Gia River. A May 11 intelligence report stated that a company from a Viet Cong battalion had moved into Do Nam, a hamlet near a small finger lake, about a mile northeast of Bravo Company’s position.
About an hour later, the Marine squad, designated BP10, approached a village and came under small-arms fire from the east. The squad, led by Sergeant Dallas Young, responded with 20 rounds of small-arms fire and five rounds from an M79 grenade launcher. It…