Polish Air Defence Force

The Polish Air Defence Force (Polish: "Wojska Obrony Powietrznej Kraju" ("WOPK") for Troops for Air Defence of the Territory) - was one of the four branches of the Polish People's Army in the years 1962-1990, along with the Polish Land Forces, Polish Air Force and the Navy.
The Air Defence Force was intended for the defence of the population, troops and economically and strategically important military and administrative-state facilities located on the territory of the country, against enemy air attack. Their organizational model was modeled on Soviet Army solutions, which resulted from their inclusion in the air defense system of the Warsaw Pact countries. OPK troops constituted an important element of the country's territorial defense forces, which also included units of land forces and the Navy.
The three Air Defence Corps were all established in 1957.
On July 1, 1990 the Air Defence Force and the Air Force merged into the Air Force and Air Defense Troops ("Wojska Lotnicze i Obrony Powietrznej" ("WLiOP")). The unified armed service took over the 1st, 2nd and 3rd Air Defence Corps as well as the 4th Air Corps ("4. Korpus Lotniczy", HQ in Poznań) established in the beginning of 1990 as a command of the Air Force's combat units of equal status to the 3 air defence corps. The 1st Air Defence Corps was disestablished in 1998, and the 2nd and 3rd Corps in 2007. Currently, after another reorganization and name change, the tasks of these troops are performed by Air Force units.
Force structure in 1989.
Territorial Air Defence Troops Command ("Dowództwo Wojsk Obrony Powietrznej Kraju"), in Warsaw