jan 1, 812 - Siege of Baghdad 812–813 CE
Description:
Fought during the Fourth Fitna (Islamic civil war) between the forces of Caliph al-Amin and his brother al-Ma'mun. Al-Ma'mun emerged victorious, becoming the next caliph.
Al-Amin’s forces: ~50,000 killed.
Al-Ma'mun’s forces: ~20,000 killed.
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