 The governor, Emin Pasha, was rescued, but the expedition was not without its failures, such as the disaster that befell the rear column.According to the Hewett Treaty of 3 June 1884, Ethiopia agreed to facilitate the evacuation of Egyptian garrisons in southern Sudan.In September 1884, Ethiopia reoccupied the province of Bogos, which had been occupied by Egypt, and began a long campaign to relieve the Egyptian garrisons besieged by the Mahdists.