The Army was reconstructed after the War, based among others on the forces established in exile in Sweden and Great Britain during the War, as well as on domestic forces. The participation in the allied occupation of Germany was a very demanding task for the Army in the period of 1946–52, but it was also a part of the reconstruction. The Army was established in all parts of the country, with a significant stronghold in Troms based on the threat picture of that time: the fear of an invasion from the East. This picture definitely changed with the fall of the Berlin Wall in 1989 and the subsequent break-up of the Soviet Union and the Warsaw Pact.