(Naples-Foggia Campaign 18 Aug 1943-21 Jan 1944 (Air); 9 Sep 1943-21 Jan 1944 (Ground) After Allied bombardment of communications and airfields in Italy, Montgomery crossed the Strait of Messina on 3 September 1943 and started northward. Five days later Eisenhower announced that the Italian Government had surrendered. Fifth Army, under Clark, landed at Salerno on g September and managed to stay despite furious counterattacks. By 18 September the Germans were withdrawing northward. On 27 September Eighth Army occupied the important airfields of Foggia, and on I October Fifth Army took Naples. As the Allies pushed up the peninsula, the enemy slowed the advance and brought it to a halt at the Gustav Line.