Ready for war duty again by 8 January 1944, "McCalla" got underway for the South Pacific. A month later she was at Majuro to resume ASW operations and escort assignments in the Marshalls. On 24 April she returned to Pearl Harbor for aircraft carrier group exercises and upon her return to Majuro, 30 May, was attached to fast carrier TF 58. Until the end of October she operated as a unit in the fast carrier screen, participating in strikes on the Marianas, Bonins, Palaus, Philippines, Formosa, and Okinawa.