The Battle of Basra was fought in the beginning of the 1991 Iraqi uprisings following the Gulf War. The battle started after demoralized troops throughout Iraq began to rebel against Saddam Hussein's Ba'athist regime, in particular after a tank driver in Basra fired at a public portrait of Saddam Hussein. Basra became a chaotic battlefield between military defectors and Republican Guard, with most of the fighting taking place at close quarters. Most of Basra had been retaken by mid March, but rebels in parts such as Tanuma managed to hold out until mid April. After Ba'athist forces had regained control, they engaged in a crackdown against civilians and suspected supporters of the uprising.
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Text from the Wikipedia article “1991 uprising in Basra”, available under CC BY-SA 4.0.