ZG 26 three days later, when six of their Hurricanes, including a section [A Flight] from No. 242 Squadron RAF, and three more from No. 87 Squadron RAF patrolled the Le Cateau quadrant. All three Canadian pilots from 242 A flight and two 85 Squadron pilots were shot down. The battle cost I./ZG 26 three aircraft; one from 2./ZG 26 and two from 3./ZG 26. 85 Squadron suffered one pilot killed, another wounded. One of the Canadians was captured, the others wounded. Later in the day, between Douai and Valenciennes, A flight from No. 111 Squadron RAF and B Flight from No. 253 Squadron RAF encountered nine Bf 110s from I./ZG 26, escorting Heinkel He 111s belonging to I. and II./KG 54, and II./ZG 26, escorting Do 17s from II./KG 76. The Hurricanes shot down one and damaged one of the Dorniers, all from 4./KG 76 while 1./ZG 26 lost one Bf 110 and two others severely damaged protecting them. Two 5./ZG 26 Messerschmitts escorting a Do 17P reconnaissance aircraft failed to protect it from an attack by No. 17 Squadron RAF. The British claimed one of the Bf 110s and reported the other fled upon seeing them. In the afternoon I./ZG 26 and II./JG 26 straffed Vitry airfield as No. 56 Squadron RAF took off to intercept I./KG 54 which bombed the Amiens – Glisy Aerodrome, the main supply base for replacement Hurricanes for the RAF in France. The Bf 110s shot down two killing both pilots including 18-year old Pilot Officer Dillon. One of the group was caught and shot down by No. 3 Squadron RAF Hurricane pilots claimed 32 Bf 110s on this date but only 16 were reported destroyed by the Germans. On 19 May large air battles occurred over Lille as encircled Allied forces held out. ZG 26 continued in the escort role as the German army reached the English Channel the following morning, cutting off British, Belgian and French forces from the rest of France. A composite force of 111 and 253 Squadron left RAF Hawkinge to patrol Cambrai. After encountering an unidentified Do 17 formation they ran into II./ZG 26 Bf 110s escorting 60 kg 54 He 111 bombers. I. and II./JG 3 were present as the dogfight started. Five Hurricanes were shot down in the fight with Bf 110s and Bf 109s and one damaged by the bombers. It is believed four