Later in 298, Constantius fought in the Battle of Lingones (Langres) against the Alemanni. He was shut up in the city, but was relieved by his army after six hours and defeated the enemy. He defeated them again at Vindonissa (Windisch), thereby strengthening the defences of the Rhine frontier. In 300, he fought against the Franks on the Rhine frontier, and as part of his overall strategy to buttress the frontier, Constantius settled the Franks in the deserted parts of Gaul to repopulate the devastated areas. Nevertheless, over the next three years the Rhine frontier continued to occupy Constantius' attention.