TheCodeBreakers
Gruppen IV and V into Hauptgruppe B for cryptanalysis, each with its
own head who reported to Kettler. This was the organization:
Gruppe Z (Zentralgruppe): personnel; pay, administration; office
space and furnishings; Nazi ideological supervision.
Gruppe I: Organization and Control. Referat la: di-
*The term "Nachrichten" reflects this, since it means not only
"communications" or "signals" but also "intelligence." In
nonmilitary contexts, it means "news" or "information."
rection of the international monitoring service (Chi had
intercept posts in Madrid and Seville as well as Lorrach and
Tennenlohe, with main posts in Lauf and Treuenbrietzen). Referat
Ib: study of foreign communications systems. Referat Ic: provision
of teletype communications for Chi and R.S.H.A./VI/MH (former
Abwehr).
Gruppe II: Development of German Cipher Methods and Control
of Their Use. Referat Ha: camouflage methods for telegraph and
annaabi.ee 
