 By 1891 the Zanzibari slavers had control of the entire western shore of the lake, apart from the region defended by Joubert around Mpala and St Louis de Mrumbi.The anti-slavery expedition under Captain Alphonse Jacques—financed by the Belgian Anti-Slavery Society—came to the relief of Joubert on 30 Oktober 1892.When the Jacques expedition arrived Joubert's garrison was down to about two hundred men, poorly armed with "a most miscellaneous assortment of chassepots, Remingtons and muzzle-loaders, without suitable cartridges".