In 1952, Anatoly went to the first class of the school-ten. So in 1962 Anatoly went to the Tambov Artillery and Technical School. The cadet Anatoly Sitnov graduated from the school with a round honors pupil, in the first category. This allowed him to choose the place of future service.
In August 1968, Senior Lieutenant Sitnov was sent to Afghanistan. In the summer of 1969, after returning from Afghanistan, Anatoly Sitnov entered the Penza Higher Military Command Engineering School. In 1973, they sent to Moscow, to a specially designed KB-12 in Babushkino, where they engaged in the development of operational documentation for the repair of various types of weapons. And then Sitnov was transferred to the 2nd department of the organizational-planning department of the GRAU. In 1975, Anatoly Sitnov was promoted to major, and the following year he took up the post of senior officer of the organizational department. In November 1979, Anatoly Petrovich Sitnov received the shoulder straps of a lieutenant colonel, and just a month later the Soviet troops entered Afghanistan. From the first to the last day of this war, Anatoly Petrovich is a member of the operative group of the GRAU and the Joint Operational Group of the General Staff of the Armed Forces of the USSR. In 1984, Colonel Sitnov became deputy head of the organizational and planning administration of the GRAU.
In 1988, Colonel Sitnov was able to complete the Higher Academic Courses at the Military Academy of the General Staff of the Armed Forces. Soon he was appointed head of the organizational and planning administration of the GRAU.
In 1990, Anatoly Petrovich Sitnov became a general. In early August 1991, the Minister of Defense released him on leave, in one of the Crimean sanatoria.
On March 11, 1994, the President of Russia signed a decree on the appointment of A.P. Sitnova chief of armament of the Armed Forces of the Russian Federation.
Colonel-General Anatoly Petrovich Sitnov broke up with the army in 2001, but he did not part with the defense industry. Having removed the military uniform, he became president, chairman of the Board of Directors of CJSC "Engines Vladimir Klimov - Motor Sich." In October 2006, he was appointed deputy chairman of the Commission for the Defense Industry Complex under the Council of the Russian Union of Industrialists and Entrepreneurs (RSPP) on competitiveness and sectoral strategies.