ubiwar . conflict in n dimensions

The Toynbee Convector points to a post at qunfuzcreation about the Zanj Rebellion in southern Iraq back in the 9th century:

Working in intolerably humid conditions clearing the salt marshes of southern Mesopotamia, fed on a poor diet of dates and semolina, frequently racially abused, the ‘Zanj’ east African slaves of 9th Century Iraq rose in their hundreds of thousands in a revolt which lasted for 15 years. They conquered large parts of Iraq, Iran and Bahrain, held the city of Basra for a decade, established their own capital, and even minted their own currency.

…

The rebellion was led by Ali ibn Muhammad, a man of mixed Persian and Arab origin, perhaps of African blood too. He claimed to be a descendant of Ali, the Prophet’s son-in-law, and employed Shii and Khariji ideas and vocabulary. He was credited with magical powers, and spoke in quasi-prophetic terms: “A cloud cast a shadow upon me. Thunder crackled and lightning flashed, and a voice addressed me, saying, ‘Head for Basra.’” He was followed by some of the local workers and peasants and some Beduin as well as by the Zanj.

Guerrilla tactics and ruthless massacre, as well as the sectarian, tribal and class divisions of the Abbasi state, quickly multiplied Zanj victories. Turkic, Slavic, Persian and Arab slaves flocked to the banner of the revolution and to the maroon city of al-Mukhtara, ‘the Chosen’, so that by the end of the rebellion non-Africans outnumbered ethnic Zanj in the revolutionary ranks.

In its final days, the ‘republic of slaves’ had become as divided by sect, class and competing centres of power as its enemies. It should be noted that Ali ibn Muhammad had promised that the liberated slaves would have slaves of their own. With Zanj unity and moral purity destroyed, it was a matter of time until revitalised Abbasi armies put down the revolt. Ali ibn Muhammad’s skewered head was paraded through Baghdad.

The final defeat of the rebellion resulted not in the reintroduction of mass enslavement but in the incorporation of the rebels into central government forces. Slavery persisted, but there would be no further attempts at mass enslavement in the eastern Arab world until a thousand years later, when Omani-controlled Zanzibar sent slave-produced coconuts and spices to European markets.