Eauze is a commune in the Gers department in southwestern France. Located in the heart of south-west France, 130 kilometers from the S…Eauze is a commune in the Gers department in southwestern France. Located in the heart of south-west France, 130 kilometers from the Spanish border, Eauze is originally a proto-Basque city that became Roman. It was the capital of the Roman province of Novempopulania until the eighth century. Its Latin name, Elusa, is identical to that of a titular see of Palaestina Tertia, suffragan of Petra.