n'oge Agha Ụwa nke Abụọ, o butere Onye isi ala Franklin D. Roosevelt gafee Atlantic gaa Mers El Kébir, Algeria, n'ụzọ gaa nzukọ dị mkpa na 1943 na Tehran na Prime Minister Winston Churchill nke Britain na Joseph Stalin, onye ndu nke Soviet Union. Mgbe a na-enyefe ya na Pacific Fleet na 1944, Iowa gbara ndị isi mmiri na Kwajalein na Eniwetok tupu ndị Allied amphibious landings na ndị na-ebu ụgbọelu na-arụ ọrụ na Marshall Islands. Ọ bụkwa onye isi ụgbọ mmiri nke atọ, na-efegharị ọkọlọtọ Admiral William F. Halsey na Japan na-enyefe na Tokyo Bay. N'oge Agha Korea, Iowa tinyere aka na mwakpo na North Korea n'ụsọ oké osimiri, mgbe nke ahụ gasịrị, e wepụrụ ya na United States Navy, nke a maara nke ọma dị ka "bọmbụ bọọlụ".
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