Battle of the Camel

The Battle of the Camel, sometimes called the Battle of Jamal or the Battle of Bassorah, took place at Basra, Iraq on 7 November 656. A'isha heard about the killing of Uthman (644-656), the third Caliph. At the time she was on a pilgrimage to Mecca. It was on this journey that she became so angered by his unavenged death, and the naming of Ali as the fourth caliph, that she took up arms against those supporting Ali. She gained support of the big city of Basra and, for the first time, Muslims took up arms against each other. This battle is now known as the First Fitna, or Muslim civil war.

• http://en.wikipedia.org/wiki/Battle of the Camel