On 14 July 1942, Submarine Division 26 was reassigned to the 5th Fleet for service in the Aleutian Islands, where the Aleutian Islands campaign had begun in June 1942 with the Japanese occupation of Attu and Kiska. "Ro-61" and "Ro-62" departed Yokosuka on 24 July 1942 bound for Paramushiro in the northern Kurile Islands, where they arrived on 30 July 1942. They put to sea again on 1 August 1942 to head for Kiska, which they reached on 5 August 1942. Thereafter, they were based there along with the submarines , "Ro-63", "Ro-64", , , and .