In response to the Ugandan invasion, Tanzania began to rapidly expand its army. Over the course of several weeks, the TPDF grew from less than 40,000 troops to over 150,000, including about 40,000 militiamen. Tanzania also mobilised several hundred anti-Amin Ugandan exiles and equipped them to battle the Uganda Army. Nyerere did not initially intend on expanding the war beyond defending Tanzanian territory. After Amin failed to renounce his claims to Kagera and the OAU failed to condemn the Ugandan invasion, he decided that Tanzanian forces should occupy southern Uganda. In February Masaka and Mbarara were seized by Tanzanian and Ugandan rebel forces and destroyed with explosives in revenge for the destruction caused by the Ugandans in Kagera. Nyerere originally planned to halt his forces and allow the Ugandan rebels to attack Kampala and overthrow Amin, as he feared that scenes of Tanzanian troops occupying the city would reflect poorly on his country's image abroad. However, Ugandan rebel forces did not have the strength to defeat the Libyan units coming to Amin's aid, so Nyerere decided to use the TPDF to take Kampala. The city fell on 11 April and Amin was deposed. The British Government supplied Tanzania with several million pounds sterling during the war to ostensibly assist with repairing the damage in Kagera, though likely with the understanding that the money would be used to fund military efforts. West Germany also gave Tanzania money to assist with the refugees from Kagera. As the TPDF secured the rest of the country, they seized the Kilembe Mines. The Tanzanians arrested the manager and three of his employees for destroying the Kyaka Bridge, but they were released several months later. The TPDF withdrew from Uganda in 1981.