On 1941-11-22, Pilot H A Sprague (Flying Officer, RCAF) service number C/1365, flew Spitfire Vb serial AD516 (squadron code YO-X) for this duty: offensive sweep. His mission was not completed. Circumstances of the aircraft loss: Shot down. This aircraft was a part of squadron no. 401. The location for the map is St Omer where 401 sqn clashed with 20+ Bf-109s and new Fw-190s. Circumstances at the end of this mission for Sprague: prisoner of war (PoW). There is no commemoration location known.