Idi Amin of Amin's ministers defected or fled into exile. In November 1978, after Amin's vice president, General Mustafa Adrisi, was injured in a car crash, troops loyal to him mutinied. Amin sent troops against the mutineers, some of whom had fled across the Tanzanian border. Amin accused Tanzanian President Julius Nyerere of waging war against Uganda, ordered the invasion of Tanzanian territory, and formally annexed a section of the Kagera Region across the boundary. In January 1979, Nyerere mobilised the Tanzania People's Defence Force and counterattacked, joined by several groups of Ugandan exiles who had united as the Uganda National Liberation
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