A lokacin yakin duniya na biyu, ya ɗauki Shugaba Franklin D. Roosevelt a fadin Atlantic zuwa Mers El Kébir, Algeria, a kan hanyar zuwa wani muhimmin taro a 1943 a Tehran tare da Firayim Minista Winston Churchill na Birtaniya da Joseph Stalin, shugaban Tarayyar Soviet. Lokacin da aka canja shi zuwa Pacific Fleet a 1944, Iowa ya harbe bakin teku a Kwajalein da Eniwetok a gaban Allied amphibious landings da kuma masu ɗaukar jiragen sama da ke aiki a tsibirin Marshall. Har ila yau, ya zama babban jirgin ruwa na uku, yana tashi da tutar Admiral William F. Halsey a Japan a Tokyo Bay. A lokacin yakin Koriya, Iowa ya shiga cikin hare-haren da aka yi a bakin tekun Koriya ta Arewa, bayan da aka cire shi a cikin jirgin ruwa na Amurka, wanda aka fi sani da "kallon turret".
47 da kuma