Despite support by the Palestine Liberation Organisation and Libya, the Uganda Army was defeated in the war's decisive Battle of Lukaya on 10–11 March 1979. Thereafter, the Ugandan military completely disintegrated. In late March 1979, Darnton estimated that Amin could only rely on about 2,500 Nubians in the Uganda Army; "the loyalty or at least will to fight" of the other troops was "questionable". In April 1979, the TPDF and its allies captured Kampala; Amin fled into exile. Some Uganda Army troops continued their resistance, but were defeated during Tanzanian mopping-up operations from April to June 1979. About 3,000 Uganda Army personnel were taken prisoner during the war. Most fleeing soldiers focused on plundering shops and banks as well as on stealing cars in hopes of escaping with as much loot as possible. The Uganda Army was replaced as Uganda's national armed forces by the Uganda National Liberation Army (UNLA), a former pro-Tanzanian alliance of rebel militias. The air force was left completely destroyed by the war, as was the army's lake patrol force. Meanwhile, Obote returned to power and became president following the disputed general election of 1980.