The British already had several American divisions under their command. This was due to a deal struck with the American armed forces, which had no transport fleet when they entered the war. The United Kingdom and their Commonwealth allies would transport six American divisions by sea to Europe. Then the American divisions would be folded into British Corps. The French had a similar deal where they exchanged the Americans' 3-inch guns for early-model French 75 mm cannon to simplify the supply of ammunition and Chauchat light machineguns to replace the Americans' scarce Lewis Guns. In return, they demanded that American troops be placed under their command to replace their early-war losses.