For the next three months "Joseph E. Campbell" served as anti-submarine screen for LST groups in and out of Okinawa. On 1 September, she departed Cebu Island, as part of the screen for occupation forces for Japan, where she arrived eight days later. "Joseph E. Campbell" continued her escort duties between Japan and the Philippines until returning to the East Coast in December. After visiting Philadelphia and Norfolk, Virginia, she steamed to Guantanamo Bay, Cuba, and San Juan, Puerto Rico, where she embarked passengers and returned to Morehead City, North Carolina, on 31 March 1946.