U.S. Amphibious Vehicles Parked At English Base -- American soldiers check over U.S. amphibious jeeps lining the side of a road at a large motor vehicle park in England where huge stocks of war equipment and supplies are massed in preparation for the approaching Allied ground offensive against the Germans in Western Europe, Across the road stand long rows of fully equipped motor vehicles parked hub to hub. Amphibious jeeps have been widely used by U.S. forces in successful landing operations in the Pacific and Mediterranean the ters of operation. September 6, 1944.