Dee ihe na-aga n'ihu maka paragraf a - Mgbe "I-4" nọ na Yokosuka, mkpọsa nke Aleutian Islands malitere na 3 <unk> 4 June 1942 site na mwakpo ụgbọ elu ndị Japan
na Dutch Harbour, Alaska, nke ndị Japan na-enweghị ihe ha mere na-esochi ngwa ngwa na Aleutian Islands nke Attu na 5 June na Kiska na 7 June 1942. Na 10 June 1942, "I-1", "I-2", "I-3", "I-4", "I-5", "I-6", na "I-7" e kenyere ndị Northern Force maka ọrụ na Aleutians, na na 11 June 1942 "I-4" setịpụrụ maka Aleutian mmiri na ụlọ ọrụ na "I-1", "I-2", "I-3", na "I-7" na-amalite ya anọ agha patrol. Na 20 June 1942, "I-1", "I-2", na "I-4" sonyeere akara patrol "K" na North Pacific Ocean n'etiti na. "I-4" nọgidere na patrol line ruo 3 Julaị 1942. Na 20 Julaị 1942, e kenyere ya ọrụ na Advance Force ma nye ya iwu ka ọ laghachi Japan. Ọ bịarutere na Yokosuka na 1 August 1942 ma malite ịrụzigharị ya.