(FRG), Reiner Fülle (code name Klaus) worked as a deputy admin-
istrator at the Nuclear Research Center in Karlsruhe. The defection of
his case officer, Werner Stiller, in January 1979 resulted in Fülle’s
arrest, but he managed to flee his captors when one slipped on an
icy patch. After taking refuge in the Soviet mission at Baden-Baden,
Fülle was smuggled to the German Democratic Republic in a wooden
box. Disillusionment, however, soon set in, and arrangements were
made with West Berlin authorities for his redefection via Hungary
with an FRG passport in September 1981. In a further twist of events,
the HVA learned the inside details of this operation from a defector
the following year. A Stuttgart court sentenced Fülle to a six-year
prison term.FUNKABWEHR. A unit of the Armed Forces High Command de-
signed to monitor enemy wireless communications, the Funkabwehr
(Radio Security Service) was established in 1940 under Hans Kopp.
Its most notable breakthrough occurred on 26 June 1941, when tracer
teams at the Funkabwehr station at Cranz, East Prussia (now Zeleno-
gradsk, Russia) made their first discovery of the Rote Kapelle. As fi-
nal defeat loomed, the Funkabwehr was dissolved on 30 April 1945.
FUNKSPIEL. A Funkspiel, or radio “playback” game, was the trans-
mission of controlled information over a captured agent’s radio so
that the agent’s parent service had no knowledge the agent had been
turned. A Funkspiel was effectively employed during World War II
by the Germans against the British, as in Operation nordpol. So-
viet counterintelligence also used the tactic successfully against the
Germans. See also DEM’IANOV, ALEKSANDR; SCHERHORN;
ROTE KAPELLE.
– G –
GARAU, HORST (1939–1988). An East German double agent for
the Bundesamt für Verfassungsschutz (BfV), Horst Garau was
an educational councilor in Cottbus who, with his wife Gerlinde,
a teacher, initially worked for the Hauptverwaltung Aufklärung
(HVA) as couriers to Great Britain and the Federal Republic of
GARAU, HORST • 123