Arriving Newport 10 February, Grundy held underway drills and training for the crews of nearly finished ships, helping to speed their delivery as active fighting units.

She departed 7 June; stopped at Eniwetok, Guam, and Saipan; and anchored 1 July at Ulithi to join an Okinawa-bound convoy.

Arriving in Japan 4 days later, Grundy put ashore her contingent of the occupation forces, embarked veteran troops, and sailed for San Francisco 8 October.

The busy transport's next duty was as part of the Magic-Carpet fleet, performing the gigantic task of returning the thousands of servicemen to the United States from the Pacific.

Designated for return to the Maritime Commission, Grundy sailed via San Francisco and the Panama Canal to Norfolk, where she arrived 8 March 1946.

In 1966 she was part of a six-ship west coast fleet sold to Grace Lines, serving as Santa Anita.