Detached from the 7th Amphibious Force 20 February, "Peiffer" reported for duty with the Philippine Sea Frontier, with which she remained for the final months of World War II. During that time she interrupted inter-island escort of convoy and anti-submarine patrol duties only once, in late July, to escort to Guam. Returning to Leyte 10 August, she remained in the Far East after the Japanese surrender and during the next few months patrolled in Philippine waters, escorted convoys to Okinawa, and, prior to sailing for the United States, carried personnel to Shanghai. On 24 November departed the China coast, and after a brief return to the Philippines, steamed east.