Tomich got underway on 5 March 1944 for Bayonne, New Jersey, where she underwent deperming before proceeding to Montauk Point for refresher training.

Dropping two 13-charge patterns, Tomich remained at general quarters throughout the night and instituted an antisubmarine patrol in company with HMS Black Swan.

Zigzagging independently on the port bow of the convoy, the destroyer escort opened fire with her entire antiaircraft battery at 0410.

After all of her charges had reached port safely, Tomich was assigned to homeward-bound Convoy GUS-36 but detached on 13 April to proceed to Oran, Algeria, for inspection of her starboard shaft.

Returning to Norfolk on the 20th, Tomich sailed as part of task force TF 64, escorting Convoy UGS-43 bound for Bizerte.

Availability at the New York Navy Yard in early July preceded further training exercises in Casco Bay, Maine, before the ship returned to Norfolk on 1 August to begin another round-trip escort mission with UGS-50 and GUS-50.

On 7 November, in company with the rest of CortDiv 7 and USS Core (CVE-13), Tomich got underway from the Naval Operating Base at Hampton Roads for Bermuda and antisubmarine "hunter-killer" group training.

Standing out of that port on the 31st, she conducted exercises while en route to Hawaii and reached Pearl Harbor on 7 August as the war in the Pacific drew to its climax.

The inexorable advance of American air and naval forces—topped by the dropping of atomic bombs on Hiroshima and Nagasaki—compelled Japan to surrender unconditionally.

Meanwhile, Tomich continued training exercises in Hawaiian waters, prior to departing Pearl Harbor on 20 August, bound for the western Pacific.

The destroyer escort relieved USS Helm (DD-388) on air-sea rescue station on 5 September for a five-day stint before heading for Iwo Jima and replenishment.

Following her arrival on the east coast, the ship underwent inactivation preparations at Charleston, South Carolina, from May through late August.