On 25 October 1944, the main units of No. 61 Wing were its headquarters, No. 3 Airfield Construction Squadron and No. 14 Airfield Construction Squadron, all of which were located at Morotai. At this time the Wing came under the command of the Australian First Tactical Air Force (1TAF), which was the RAAF's main mobile formation. In November No. 3 Airfield Construction Squadron was selected to participate in the liberation of Mindoro in the central Philippines while No. 14 Airfield Construction Squadron remained at Morotai to complete and maintain facilities there alongside army engineer units. A liaison party comprising 16 personnel from No. 61 Wing accompanied No. 3 Airfield Construction Squadron.