Well, I have not been able to find any units, but I will go with the commanders (as always) and post pics of them. (I love doing that!)

Oberkommando des Heeres

Oberbefehlshaber der Heeres
Generaloberst Walther von Brauchitsch



Chef des Generalstabs des Heeres
General der Artillerie Franz Halder



Heeresgruppe "Nord"

Generaloberst Fedor von Bock



III Armee

General der Artillerie Georg von Küchler

IV Armee

General der Artillerie Günther von Kluge



Damned! I couldn't find anypic of Küchler, but I will!

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"War is less costly than servitude, the choice is always between Verdun and Dachau." - Jean Dutourd, French veteran of both world wars

"A mon fils: depuis que tes yeux sont fermes les miens n’ont cessé de pleurir." - Mère française, Verdun