However, the Home Army commander, Tadeusz Bór-Komorowski, took a different approach, and on 20 November, he outlined his own plan, which became known as Operation Tempest. On the approach of the Eastern Front, local units of the Home Army were to harass the German "Wehrmacht" in the rear and co-operate with incoming Soviet units as much as possible. Although doubts existed about the military necessity of a major uprising, planning continued. General Bór-Komorowski and his civilian advisor were authorised by the government in exile to proclaim a general uprising whenever they saw fit.