Following the landing at Inchon and the northward advance of UN troops, No. 77 Squadron relocated to Pohang, South Korea, on 12 October 1950. It left its main support elements at Iwakuni. No. 91 (Composite) Wing was established at the base on 20 October. The term "composite" referred to an RAAF formation made up of disparate operational elements, rather than one comprising a single type such as bombers or fighters. Commanded by Group Captain A.D. (Dallas) Charlton, No. 91 Wing was given administrative responsibility for all RAAF units operating during the Korean War. As well as No. 77 Squadron, this included the newly formed No. 391 (Base) Squadron and No. 491 (Maintenance) Squadron, and No. 30 Communications Flight, formerly the No. 77 Squadron Communications Flight and initially comprising its two Dakotas and two Austers. Apart from No. 77 Squadron, the wing's units were all headquartered at Iwakuni. Some members of the US Far East Air Forces command favoured the establishment of a British Commonwealth Wing, to include No. 77 Squadron and the Mustang-equipped No. 2 Squadron of the South African Air Force, then en route to Korea, but the South African government vetoed the idea.