TheCodeBreakers
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. Amt III, Domestic Intelligence, and the foreign branch into Amt
VI, Foreign Intelligence. Amt VI was charged with the production of
secret information about enemy countries.
It apparently directed its thoughts mainly to the more traditional
methods of gathering such intelligence. But
annaabi.ee 
