The emblem of the night fighter force was a creation of "Oberleutnant" Victor Mölders, brother of Werner Mölders. The emblem, which in parts was based on Falck's family coat of arms, depicts a silver falcon on the dark sky with a red lightning bolt over a section of the globe pointing at London. To support the creation and organization of the nocturnal aerial defenses, the 1. "Nachtjagd-Division" (1st Night Fighter Division) was created on 17 July 1940. This division was placed under the command of "Oberst" Josef Kammhuber and was made operational by 1 August at Zeist in the Netherlands. That day, Kammhuber's command structure was further augmented and reorganized as XII. "Fliegerkorps" (12th Air Corps).