Justinian, emboldened by the increase of his…

Justinian, emboldened by the increase of his forces in Asia Minor, now renews the war against the Arabs, provoking them into attacking the eastern frontier over a disagreement concerning Cypriot policy.

The Umayyad army is led by Muhammad ibn Marwan, brother of the Caliph, and included the minister of defense, the famously known Al-Hajjaj ibn Yusuf.

The imperial forcers are led by Leontios and include a "special army" of thirty thousand resettled Slavs under their leader Neboulos.

Justinian’s new troops help him to win a battle against the Caliphate in Armenia in 691, but they are soon bribed to revolt by the Arabs.

The Umayyads, incensed at the breaking of the treaty, use copies of its texts in the place of a flag.

Although the battle seems to be tilting to the imperial advantage, the defection of upwards of twenty thousand Slavs ensures a Roman defeat.