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In page Alexios I Komnenos:

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In 1074, western mercenaries led by Roussel de Bailleul rebelled in Asia Minor,[5] but Alexios successfully subdued them by 1076.[6] In 1078, he was appointed commander of the field army in the West by Nikephoros III.[7] In this capacity, Alexios defeated the rebellions of Nikephoros Bryennios the Elder (whose son or grandson later married Alexios' daughter Anna) and Nikephoros Basilakes, the first at the Battle of Kalavrye and the latter in a surprise night attack on his camp.[citation needed] Alexios was ordered to march against his brother-in-law Nikephoros Melissenos in Asia Minor but refused to fight his kinsman. This did not, however, lead to a demotion, as Alexios was needed to counter the expected invasion of the Normans of Southern Italy, led by Robert Guiscard.[citation needed]