Formed 2.40 in Marx from parts of III./KG26:
Stab/KGr.126 from Stab III./KG26
1./KGr.126 from 7./KG26
2./KGr.126 from 8./KG26
3./KGr.126 from 9./KG26
Conducted mining operations in coastal waters. From 8.40 attached to Stab/KG40.
In 12.40 redesignated I./KG28:
Stab/KGr.126 became Stab I./KG28
1./KGr.126 became 1./KG28
2./KGr.126 became 2./KG28
3./KGr.126 became 3./KG28
Bases:
| 2.40 - 7.40 | Marx | 9. Flieger-Division | He 111H |
| 7.40 - 12.40 | Nantes | 9. Flieger-Division IX. Fliegerkorps (from 10.40) |
He 111H |