 He also had hardly any medicine left.Captain Jacques asked Joubert to remain on the defensive while his expedition moved north.On the 3rd of Januari 1892, Captain Alphonse Jacques' anti-slavery expedition founded the fortress of Albertville on the shores of Lake Tanganyika, and tried to put an end to the slave trade in the region.Rumaliza's troops surrounded Albertville on 5 April and besieged the outpost for 9 months.