Laid down under a Maritime Commission contract on 1 July 1944, the attack transport Allendale (APA-127) was launched on 9 September and commissioned on 22 November. After a series of training exercises along the West Coast of the United States, the Allendale set sail for Hawaii in January 1945. Once there, she took on troops and cargo and sailed for the Philippines in late March, stopping at Eniwetok, Ulithi, and the Palau Islands.
Beginning preparations for the invasion of Okinawa, the Allendale sailed with Task Unit 51.13.24 and began lowering her boats for the operation on the morning of 1 April 1945. In spite of heavy Japanese air opposition, all of the Allendale ’s cargo was successfully offloaded by 9 April, and she sailed for Saipan soon afterward. After a two-day stay in Saipan, the Allendale sailed for Pearl Harbor on her way to San Francisco, California.
Arriving in California on 5 May, the Allendale loaded troops and supplies for a voyage to Leyte and arrived in San Pedro Bay on 10 June after stopovers at Pearl Harbor, Eniwetok, and Ulithi. After discharging her cargo and troops, the Allendale departed for New Guinea on 19 June. Once there, she loaded up cargo and troops—this time bound again for the Philippines—and arrived in Manila on 8 July. Soon after disembarking her passengers and offloading her cargo, the Allendale set sail for California, arriving on 4 August.
From the United States shortly after the Japanese surrender, she set sail with the Allied occupation forces and arrived at Wakayama on 27 September, where she disembarked her cargo of GI passengers who were to serve in the occupation. Within three days, the Allendale was at sea again, sailing to Leyte, where she embarked passengers of the X Army Corps before heading back to Japan, arriving in Honshu on 21 October.
The following week, the Allendale set sail for the United States, stopping in the Philippines on 1 November 1945 to pick up returning servicemen, and entering San Francisco Bay on 22 November. After a brief dry-dock repair at the Hunters Point Naval Shipyard, the Allendale sailed for the East Coast via the Panama Canal and arrived in Norfolk on 30 January 1946. She was decommissioned on 14 March and transferred to the Maritime Commission on 20 March. Her name was stricken from the Navy List on 28 March 1946.