In September 1951 he became Second Secretary of the party's regional leadership in Luckenwalde, and in 1952 he undertook a period of study at the "Ernst Thälmann [regional party] Academy" at Schmerwitz (Wiesenburg). Between 1954 and 1957 he combined his professional duties with a correspondence study course at the party's Karl Marx Academy in Berlin. In 1953 he joined East Germany's quasi-military police service. Between 1953 and 1962 he was employed an instructor and department head for the in the "M" division and in the Security Issues Department of The Party Central Committee, with responsibility for setting up battle groups. He next took over, between 1962 and 1972, as a Police Colonel and with regional responsibility for the Police in Frankfurt (Oder). Between 1963 and 1972 he sat as a member of the , serving as Chairman of its Standing Commission for Order and Security. In 1967 he became a member of The Party Regional Leadership Team for Frankfurt (Oder). During this time, in 1966/67, he also underwent a succession of leadership courses at the National Police Academy in Berlin. In 1972 he joined the International Relations Department of The Party Central Committee, also becoming Deputy General Secretary of the national Afro-Asian Solidarity Committee. Between 1974 and March 1982 he then served as General Secretary of the committee, a position he surrendered before becoming, in April 1982, the German Democratic Republic's Ambassador to Afghanistan, a posting he was to retain for a little more than four years. Kurt Krüger retired from public service in 1988.