Idi Amin Kampala suburb of Nakasero became the scene of torture and executions over the next few years. Other agencies used to persecute dissenters included the military police and the Public Safety Unit (PSU). Obote took refuge in Tanzania, having been offered sanctuary there by the Tanzanian President Julius Nyerere. Obote was soon joined by 20,000 Ugandan refugees fleeing Amin. The exiles attempted but failed to regain Uganda in 1972, through a poorly organised coup attempt. Amin retaliated against the attempted invasion by Ugandan exiles in 1972, by purging the army of Obote supporters, predominantly those from the Acholi and Lango ethnic
David Oyite-Ojok the '..newly created post of Assistant Military Secretary in the Ministry of Defence,' serving as a Major. His duties included '..planning, all policy matters, and control of Establishment.' When Idi Amin overthrew Obote in 1971, Oyite Ojok was amongst the military personnel who fled to neighbouring Tanzania and, eight years later, in the wake of Amin's 1979 invasion of the country, assumed a key role in the grouping of military exiles who, with the backing of Tanzanian troops, led the counteroffensive which resulted in the overthrow of Amin. Oyite Ojok became a member, along with Yoweri Museveni, Paulo Muwanga and