In connection with the outbreak of
World War II in 1939, a secret
intelligence service was established, the G Section (
G-sektionen), or the Border Section (
Gränssektionen) for surveillance of the Swedish borders and control of migration flows. In 1942, the
Defence Staff was heavily reorganized. The coordinators for the intelligence and security service became Section II (from 1966 named Section 2). Section I included the Foreign Department, the Domestic Department and the G Section, which now changed its name to
C-byrån or
Centralen. The operations came from the 1950s to be headed by Jan Rydström, also a former employee of C-byrån. After a
schism between Thede Palm and Jan Rydström,
Detalj II was split from T-kontoret. The East Economic Agency Foundation (
Stiftelsen Öst Ekonomiska Byrån) was established with Jan Rydström as head. Group B was the unit for domestic intelligence which was formed in 1957-58. In the summer of 1961, the Group B was organizationally separated from the Fst/In and received independent status directly under the chief of Fst/Sekt II. In 1965 the T-kontoret was merged with Group B into a single secret organization known as
IB. Palm was fired the year before and head of the merged entity was Birger Elmér, the former head of Group B. ==See also==