磅湛省
On 1 May 1970 as part of Operation "Toan Thang 43" (Total Victory), an early phase of the Cambodian Campaign, the 3rd Airborne Brigade together with other US forces crossed into Kampong Cham Province of Cambodia. The Airborne played a significant role in the campaign, with battalions participating in most of the individual operations and finding significant caches of supplies, alongside being the sole force dropped behind enemy lines to cut-off a potential retreat.