 The name Lajjun derives from the Roman name Legio , referring to the Roman legion stationed there . In the 3rd century , the town was renamed <unk> ( " City of Maximian " ) by Diocletian in honor of Maximian , his co @-@ emperor , but the inhabitants continued to use the old name . Under the Caliphate , the name was Arabicized into al @-@ <unk> or el @-@ <unk> , which was used until the Crusaders conquered Palestine in 1099 . The Crusaders restored the Roman name " Legio " , and introduced new names such as <unk> and le Lyon , but after the town was reconquered by the Muslims in 1187 , " al @-@ Lajjun " once again became its name . 
