 Complete the following phrase:  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 countrys image abroad. However, Ugandan rebel forces did not have the strength to defeat the Libyan units coming to Amins aid, so Nyerere decided to use the TPDF to take Kampala. The 