The invasion fleet, led by Admiral Sir Bertram Ramsay, was split into the Western Naval Task Force (under Admiral Alan G Kirk) supporting the American sectors and the Eastern Naval Task Force (under Admiral Sir Philip Vian) in the British and Canadian sectors. The American forces of the First Army, led by Lieutenant General Omar Bradley, comprised VII Corps (Utah) and V Corps (Omaha). On the British side, Lieutenant-General Miles Dempsey commanded the Second Army, under which XXX Corps was assigned to Gold and I Corps to Juno and Sword. Land forces were under the overall command of Montgomery, and air command was assigned to Air Chief Marshal Sir Trafford Leigh-Mallory. The First Canadian Army included personnel and units from Poland, Belgium, and the Netherlands. Other Allied nations also participated.