High Quality Content by WIKIPEDIA articles! The Uganda People's Army (UPA) was a rebel group recruited primarily from the Iteso people of Uganda that was active between 1987 and 1992. The UPA was composed mostly of former soldiers in the special forces of the Uganda National Liberation Army and opposed the National Resistance Army (NRA) government of Yoweri Museveni, who took power in January 1986. Reaching a height after the widespread cattle raid by Karamojong in 1987, the UPA rebellion was eventually ended through the mediation of the Teso Commission.