"Anderson" remained with the Northern Pacific Force for the remainder of the war, and departed Alaskan waters for Japan on 27 August. She reached Ominato, Japan, on 8 September, and supported the occupation of northern Honshū through 30 October. She departed Japanese waters on that date, bound for the United States, and arrived at San Diego on 1 December. She was earmarked for retention in an inactive status in view of the experimental tests to which she would be subjected. Two days after Christmas, she got underway for Hawaiian waters.