The DUKW is a six-wheeled amphibious vehicle that was used by the U.S. military during World War II and the Korean War. It was designed to transport goods and troops over land and water, and was particularly effective in amphibious warfare attacks. The DUKW was also used by Allied forces and several other countries. After the war, many DUKWs were stored or disposed of, but some remained in service and were used in various conflicts.