Naval supremacy was vital to the amphibious operations carried out, such as the invasions of Northwest Africa (Operation Torch), Sicily, Italy, and Normandy (Operation Overlord). For Operation Neptune the RN and RCN supplied 958 of the 1213 warships and three quarters of the 4000 landing craft. The use of the Mulberry harbours allowed the invasion forces to be kept resupplied. There were also landings in the south of France in August.