She was transferred to the Army Transport Service (ATS) and later renamed Major General Walter R. Weaver after Major General Walter R. Weaver, a graduate of Virginia Military Institute that went on to serve in several prominent commands during World War I and World War II, in the United States Army Air Forces.

The conversion added the following shops on the Liberty ship; machine, sheet metal, radiator, tank, wood, pattern, blue print, electrical, fabric and dope, paint, air-conditioned instrument and camera, radio, battery, propeller, tires and fuel cells, armament and turrets, plating, oxygen plant, radar, carburetor, and turbo-super-charger.

[3] The crew was given two weeks training in seamanship at the Grand Hotel in Point Clear, Alabama, on Mobile Bay.

[3] On 21 February 1945, Thomas LeValley anchored in Lingayen Bay, and began her mission of transferring and repairing equipment from onshore.

[3] On 5 March 1946, she was laid up in the National Defense Reserve Fleet, in the James River Group, in Lee Hall, Virginia.