干邑
III./KG 100 was reformed on 29 April 1943 at Schwäbisch Hall. The K.Gr. 21 was redesignated to form the group. The Dornier Do 217K-2 was made available to the unit. The group was then given specialist training in the use of the Fritz-X guided missile in May and June 1943. "Hauptmann" Ernst Hetzel was given command on 4 May 1943. II./KG 100 was also trained for use with guided anti-ship missiles. A "Einsatzstaffel" was left behind at Athens with 17 Ju 88s and He 111s. The group was equipped with the Do 217 and began training with the Henschel Hs 293 missile at Peenemünde. It absorbed the remains of the "Erprobungsstaffel"/KG 30 bomber wing's service-test squadron, and was declared operational in July 1943. It was deployed to Istres, France on 12 July, to Foggia on 17 July and the main part of the "Gruppe" was located at Cognac, France on 31 July. It flew no operations for most of August.