Per the English-Review of Religions of September-1915 (see page 355) an Ahmadi was living in Kampala, Uganda by the name of Fazl Din, he was a Veterinary Assistant. This Fazl Din mentions about Eid and how many people showed up and he asked them for money to send to Qadian, then he tells us that the British government has given the Ahmadiyya Movement 4000 acres of land to use for a mosque. September-1915, pages 350-357.
Per Fisher, the first Ahmadi mullah to arrive in East Africa was in 1934, in Mombasa, Kenya, this is a coastal city wherein Islam is deeply entrenched. The Ahmadi mullah was the famous Sheikh Mubarak Ahmad.
Commander Dr. Abdul Latif is sent as a medical missionary to Uganda and Kenya, basically East Africa. The other one was Major Dr. M. Shah Nawaz Khan (1899–1977), he was the pioneer Ahmadi Muslim medical missionary to West Africa.
Per Fisher, the first Ahmadi mullah to arrive in East Africa was in 1934, in Mombasa, Kenya, this is a coastal city wherein Islam is deeply entrenched. The Ahmadi mullah was simply named Mubarak Ahmad.
Per Ahmadiyya sources, “Our Foreign Missions” (1958) there was one Ahmadi mosque there in Jinja, Uganda, it seems to have been built in 1957.