Complex sentence: In September 715, the vanguard under general Sulayman ibn Mu'ad marched over Cilicia into Asia Minor, taking the strategic fortress of Loulon on its way, and wintered at Afik, an unidentified location near the western exit of the Cilician Gates.
Split into simpler sentences: In September 715, the vanguard, under general Sulayman ibn Mu'ad, marched over Cilicia into Asia Minor, taking the strategic fortress of Loulon on its way. They wintered at Afik, an unidentified location near the western exit of the Cilician Gates.