TheCodeBreakers
naud could certainly be considered enemies of Germany and the Nazi
party. But the S.D. probably got most of the external communications
intelligence that it needed from the Forschungsamt, which was quite as
interested as the S.D. in preserving the Nazi regime.
Himmler headed the S.S. as a party official; as a government official
he headed the two Reich police organizations: the Gestapo, which
handled political crimes, and the Kripo, or Kriminalpolizei, which dealt
with ordinary crimes. Both had communication intelligence sections, but,
as with the S.D., these probably concentrated primarily on telephones
and mail and had but little cryptanalysis to do.
In 1939, the party and government police organizations were merged
as the R.S.H.A., the Reichssicherheitshaupt-amt ("Reich Central Security
Office"). The Gestapo became Amt IV of the R.S.H.A., the Kripo Amt V.
The government domestic watchdog branch of the S.D. evolved into the
R.S.H.A
annaabi.ee 
