Shortly afterwards Antiochus III crossed the Hindu Kush .
Shortly afterwards Antiochus III attacked an Indian prince named Subhagasena ( Sophagasenas of the classical writers ) who ruled over the Kabul valley .
Shortly afterwards Antiochus III crossed the Hindu Kush and attacked an Indian prince named Subhagasena ( Sophagasenas of the classical writers ) who ruled over the Kabul valley .