The four subzones formed the Central Area in Austria's mountainous interior, which was outside of the anticipated main axis of a Warsaw Pact advance. In the event of an attack and an occupation of most of Austria, one or more the sub zones would form the national territory, which would justify the continuation of Austria as a subject of international law. The central area was therefore of essential importance and had to be defended at its entrances. The Army Command and Austrian government would have retreat to a bunker complex in St Johann im Pongau in the central area. Furthermore, the central area acted as main depot of Austria's war stocks. The capital Vienna would not have been defended and was therefore excluded from defense preparations.
The four subzones formed the Central Area in Austria's mountainous interior, which was outside of the anticipated main axis of a Warsaw Pact advance. In the event of an attack and an occupation of most of Austria, one or more the sub zones would form the national territory which would justify the continuation of Austria as a subject of international law. The central area was therefore of essential importance and had to be defended at its entrances. The Army Command and Austrian government would have retreat to a bunker complex in St Johann im Pongau in the central area. Furthermore, the central area acted as main depot of Austria's war stocks. The capital Vienna would not have been defended and was therefore excluded from defense preparations.