But his campaign against the Visigoths was crowned with success when , in 507 C.E . , he defeated them at Vouillé , near Poitiers , a victory that gave him control of most of southwest Gaul .
But his campaign against the Visigoths was crowned with success when , in 507 C.E . , he defeated them at Vouille , near Poitiers , a victory that gave him control of most of southwest Gaul .