Albert Thys founded the ''
Compagnie Congolaise pour le Commerce et l'Industrie'' (CCCI) in 1887. King Leopold granted him extensive trading privileges since his enterprise was seen as a bastion against British interests. When Delcommune returned to Brussels in 1889, he was given charge of a CCCI expedition to Katanga (1890–1893). The "
Compagnie du Katanga" formed for the expedition was theoretically a private organization, but in practice was an instrument of the Congo Free State. Preparation for the expedition began in May 1890, and the expedition left
Matadi in September of that year. With Delcommune were the geologist Diderrich, the naturalist Protche, doctor Briard, Baron de Roest d'Alkemade and Count Soutchoff. Delcommune was charged with exploring the region and examining its local wealth and the problems of transport and communications. The expedition left
Kinshasa on 17 October 1890 on two steamers.
Ville de Bruxelles was provided by the state and
Florida was provided by the Haut Congo Society. In Katanga, the Nyamwezi trader
Msiri had seized power around 1860, expanding his empire to cover a large part of the
Luapula valley. By the time of Delcommune's expedition his rule had greatly contracted, but both the Belgians in the free State and the British in Southern Africa were determined to fully control the mineral-rich area of
Katanga. Msiri refused to make any formal treaty with either power.
Cecil Rhodes had told an agent of the
British South Africa Company "I want you to get Msiri's. I mean Katanga... You must go and get Katanga". A small force of Belgians from an expedition led by
Paul Le Marinel had been allowed to establish a post near to Msiri's capital early in 1891. Delcommune's expedition was primarily concerned with finding gold, and secondarily with settling the country. Delcommune was to try to make Msiri accept Belgian rule, and then go south to where the gold fields were thought to be. His chosen route up the Lualaba from
Bena-Kamba turned out to be extremely difficult, with many rapids to be negotiated. On 3 May 1891 the expedition reached
N'Gongo-Lutita. There they met Rachid, the nephew and successor of
Tippoo-Tib, who lent them porters. Delcommune went on by land, making treaties with the local chiefs as he went. Delcommune's expedition reached
Bunkeya in October 1891, but he was unable to persuade Msiri to accept Belgian rule and continued south. In December 1891 a larger expedition arrived at Bunkeya from
Zanzibar. At the age of 25 the Canadian-born engineer, soldier and mercenary
William Grant Stairs had been second in command of Henry Morton Stanley's 1887 expedition to relieve
Emin Pasha in
Equatoria. In 1891 he was commissioned to lead an expedition to Bunkeya to obtain Msiri's submission. Stairs demanded that Msiri accept the sovereignty of Leopold II over his territory. Msiri again refused and fled to a nearby village where he was killed by members of Stairs' force. Resistance ceased and Katanga came under Belgian rule. In August 1892, Delcommune's expedition was returning north by way of
Lake Tanganyika, where he came to the assistance of a group of missionaries from the
London Missionary Society at
Albertville who were threatened by Arab slavers. However, in an attempt to gain control of the Arab fort the Belgians were beaten off. Out of the 650 men that left on Delcommune's expedition, 543 had lost their lives by the time it ended in February 1893. ==Later career==