From 25 May 1940 ZG 26 was reassigned from Jagdfliegerführer 2 to Fliegerkorps V to provide KG 51 with support. ZG 26 remained in action during the Dunkirk evacuation, and the final phase of the French campaign, Fall Rot. Over 31 May, ZG 26 claimed five Spitfires over Dunkirk. Two Hurricanes were known to have been shot down in combat with Bf 110s. Both No. 229 Squadron RAF pilots survived. A Spitfire from No. 64 Squadron RAF was reported lost in combat with Bf 110s. Its pilot was captured but later died of wounds. On 5 June Stab./ZG 26 was based at Sint-Truiden, I./ZG 26 at Yvrench/Saint Omer, II./ZG 26 at Lille and III./ZG 26 at Arques, Pas-de-Calais. ZG 26 was subordinated to Fliegerkorps I in June and flew in support of German air operations against Operation Ariel. By the end of the French campaign following the Armistice of 22 June 1940, the "Zerstörergeschwader" 1, 2, 26, 52 and 76 had suffered a combained loss of 32 percent—the worst percentage loss by any German wing type.