In late August 1940 a single German Junkers Ju 88 bomber appeared suddenly out of the mist and dropped its load of bombs on the station, all of them missing the runways and buildings to explode harmlessly on open ground. In February 1941 the first of the Canadian fighter squadrons arrived at Digby. No. 1 (Canadian) Squadron and No. 2 (Canadian) Squadron immediately renumbered as No. 401 Squadron RAF and No. 402 Squadron RAF respectively; both squadrons were equipped with Hurricanes. The Canadian Digby wing was formed on 24 April 1941 when the station received three further squadrons, 409 Tactical Fighter Squadron flying Boulton Paul Defiants, No. 411 Squadron RCAF and No. 412 Squadron RAF both flying Supermarine Spitfires.