unknown. The units does not appear on the air corps' order of battle on 10 May. On 10 May 1940 II./ZG 26 had moved to Kaarst-Neuss, under the command of Fliegerkorps I. By 5 June 1940 it had been assigned to Fliegerdivision 9. I./ZG 26 was deleted from I Fliegerkorps' order of battle by the 10 May, and its location is not known. The Stab/ZG 26 had all three Bf 110s operational. I./ZG 26 could field only 11 of the 34 Bf 110s it had, while III./ZG 26 reported 30 of 37 aircraft combat ready. II./ZG 26 reported 25 of 35 Bf 110s operational. Western Europe On 10 May 1940 Fall Gelb, the Wehrmacht's offensive in Western Europe began beginning the Battle of the Netherlands, Battle of Belgium and Battle of France. ZG 26 was ordered to support the invasion of the Netherlands and Army Group B. With support from JG 26, it could not prevent the Dutch Air Force from downing 11 German bombers on the opening day; one of them was the commanding officer of Kampfgeschwader 4, who became a prisoner of war for several days. The Dutch fighters accounted for 21 German aircraft in total, and flew 87 of the 150 sorties logged on the day. In the battles they lost 25 of their own against JG 26 and ZG 26. The Dutch were reduced to 70 aircraft by the following morning but continued to harass the German air operations and claimed a further 13 German aircraft over the next four days. Battles were fought simultaneously over Belgium. The counter-air operations were successful and Joachim-Friedrich Huth's pilots, with support from JG 26, claimed the majority of the 82 Allied aircraft claimed by Luftflotte 2 over the 11–13 May 1940. Belgian aerial resistance was broken on the first day of operations. A total of 83 Belgian machines–mostly trainers were destroyed. The AéMI flew only 146 sorties in the first six days. Between 16 May and 28 May, the AéMI flew just 77 operations. The long-range Bf 110s were used in the fighter escort role in the afternoon of 11 May. I./ZG 26 sent 15 of its aircraft to escort 30 Dornier Do 17 bombers from III./KG 76 on a bombing raid to Reims. No. 1 Squadron RAF intercepted them and claimed no fewer than nine Bf 110s. Witnesses on the ground claimed they saw six Bf 110s fall,