The A Sầu Valley was an important corridor for the PAVN and Viet Cong (VC), who frequently used it to transport supplies from Laos into South Vietnam as well as employed it as staging area for attacks.
On 14 May units of the 3rd Brigade, 101st Airborne found 53 PAVN bodies about 2 miles (3.2 km) east of the Laotian border.
[4]: 35 On 16 May at 01:10, units of the 3rd Brigade, while in night defensive positions 13 miles (21 km) northwest of A Sầu received sporadic small arms and RPG fire until 05:30, a sweep of the perimeter at dawn found 14 dead PAVN.
[4]: 37 On 18 May at 07:15, units of the 3rd Brigade engaged a PAVN force occupying fortified positions 2 miles east of the Laotian border.
Heavy fighting continued with tactical airstrikes and helicopter gunships supporting the 3rd Brigade until contact was lost at 21:00.
[4]: 40 On 19 May units of the 3rd Brigade engaged a PAVN force occupying fortified positions 2 miles east of the Laotian border.
[4]: 41 On 20 May units of the 3rd Brigade engaged a PAVN force occupying fortified positions 2 miles east of the Laotian border.
[4]: 43 On 21 May Brigade units found the bodies of 48 PAVN soldiers killed by airstrikes or artillery the previous day, together with 37 individual and 13 crew-served weapons.
[4]: 45 On 23 May, while patrolling around Firebase Airborne, units of the 2nd Battalion, 506th Infantry Regiment lost 4 killed in several separate skirmishes.
[6]: 5 On 1 June Company C, 2/506th found a 6,500 pound rice cache and at YD349061 the wreckage of a crashed UH-1D helicopter and the remains of a crewman.
The US claimed that the month‑long operation accounted for 753 PAVN killed, four prisoners, 272 individual and 43 crew‑served weapons captured and more than 100,000 rounds of ammunition discovered.
Operation Apache Snow resulted in a strategic victory for US and ARVN troops, but the abandonment of Hill 937 was a moral defeat that caused widespread outrage from US forces and the US public.