In September 1945, the U.S. Office of Strategic Services (OSS) headquarters in Kunming dispatched a mission to Laos. The purpose and composition of the mission were described on the first page of the mission's report as follows:
The Raven Mission was put on by OSS in cooperation with AGAS [Air Ground Aid Section], and parachuted near Vientiane, French Indo-China on 16 September 1945 for Prisoner of War relief work. This mission was activated following a request by G-5 SOS. The mission was composed of the following personnel: Major [Aaron] Bank, Mission Leader; Major [Charles] Holland, Executive Officer; Lt. [Alger] Ellis, Asst. Executive Officer; Lt. Phelan, AGAS Representative; Lt. [B. Hugh] Tovar, Reports Officer; Lt. Reese, Reports Officer; T/5 McKowan, Radio Operator; T/5 Blandin, Medic; Lao Trug [Luu], Interpreter.