Mezue ahịrịokwu na-esonụ: Ụgbọ mmiri ahụ na-ebute ụzọ na Caribbean, wee kwaga na Mediterranean, na-ekere òkè na
ụgbọ mmiri ndị ahụ kwụsịrị n'ebe ndịda France. Na Jenụwarị 1945, "Incredible" kwagara n'Oké Osimiri Ojii, ma rụọ ọrụ mkpochapụ n'èzí ọdụ ụgbọ mmiri Soviet na Sevastopol, Crimea. Mgbe nke ahụ gasịrị, ụgbọ mmiri ahụ rụrụ ọrụ nnapụta nke ikuku-oké osimiri na Oké Osimiri Ojii tupu ịlaghachi Palermo, Sicily. Ka ọ na-erule oge a tọhapụrụ ya na Machị 1946, ọ nwetala ọkwa nke Sonarman First Class (SO1) ma nweta akara ya nke onye na-ekpocha ogbunigwe. E nyekwara ya ihe nrite Bronze Star na ihe nrite Good Conduct Medal. N'ihi ọrụ ya, Van Cleef tozuru oke maka European-African-Middle East Campaign Medal, Medal nke Asia-Pacific Campaign, American Campaign Medal, na World War II Victory Medal. A chụrụ ya n'ọrụ n'ụgbọ mmiri n'afọ 1946.