 The campaign, planned between the two Christian monarchs possibly since the marriage of Amalric with Manuel's great-niece Maria in 1167, would not only end in failure, but also lead to the establishment of the energetic Saladin in the place of the moribund Fatimid government as ruler of Egypt, in what would prove a major turning-point of the Crusades.Manuel mobilized a large force, well beyond what he was obliged, according to the chronicler William of Tyre