 Baybars rebuilt the Bahriyyah's former headquarters in Rawdah island and put Qalawun, one of his most senior associates, in command of it.In 1263, Baybars deposed al-Mughith of al-Karak based on allegations of collaborating with the Mongol Ilkhanate of Persia, and thus consolidated his authority over Muslim Syria.During his early reign and through heavy financial expense, Baybars rebuilt and stringently trained the Mamluk army, which grew from 10,000 cavalry to 40,000, with a 4,000-strong royal guard at its core.