Wachtmeister was promoted to major in 1944 and he became major of the General Staff Corps in 1946. He served as chief of staff of the IV Military District from 1946 to 1949 and became lieutenant colonel of General Staff Corps in 1948 and of Hälsinge Regiment (I 14) in 1949. Wachtmeister was promoted to colonel in the cavalry and appointed regimental commander of Norrland Dragoon Regiment (K 4) in 1952. Five years later, Wachtmeister was appointed Commendant of Stockholm and Defence District Commander for Stockholm Defence District (Fo 44).[1] He attended the Swedish National Defence College in 1958 and served as Defence District Commander until 1963 when he retired from the Swedish Armed Forces. Wachtmeister then worked as an expert i preparedness issues from 1963 to 1981.[3]
He was chairman of the Swedish Fencing Association (Svenska Fäktförbundet) from 1948 to 1952.[1] He competed in the team sabre event at the 1936 Summer Olympics.[4]
In 1929, he married Birgit Thuresson (1906–1986), the daughter of the major in the Road and Waterway Construction Service Corps, Elis Thuresson and Carin Santesson. They had two children: Carl-Fredrik (born 1936) and Caroline (born 1939).[1]
^Kjellander, Rune (2003). Sveriges regementschefer 1700-2000: chefsbiografier och förbandsöversikter (in Swedish). Stockholm: Probus. p. 227. ISBN9187184745. SELIBR8981272.
^Sveriges dödbok 1901-2009 [Swedish death index 1901-2009] (in Swedish) (Version 5.0 ed.). Solna: Sveriges släktforskarförbund. 2010. ISBN9789187676598. SELIBR11931231.