To refine their accuracy in marking the targets, the Pathfinders used sophisticated navigational aids, one of which was Oboe. 109 Squadron, flying Oboe-fitted Mosquitoes, were often leaders in the bombing raids, and they had a number of star aircrew, including Group Captain H Bufton, one of Oboe’s pioneers. See our new page for Mosquito Week: Mosquito Squadrons & Oboe