However, a collision with aircraft carrier Cowpens on 18 October forced her into the Pearl Harbor Navy Yard for a repair period lasting almost three months.

The assignment of that task group – carried out between 29 January and 17 February was to cut off bypassed Wotje and Taroa and to prevent enemy troops and war-planes there from supporting the Japanese garrisons at Majuro, Kwajalein, and Eniwetok.

Abbot joined Chester, Salt Lake City, Pensacola, and five other destroyers in frequent shore bombardments of the two atolls to keep troops occupied and planes grounded.

By the middle of March, the destroyer had been reassigned to the southwestern Pacific where she carried out convoy escort duty between the southern Solomons and the New Guinea ports of Milne Bay and Cape Sudest.

The destroyer helped to protect the escort carriers from possible Japanese air and submarine attacks, while they launched their planes to provide close support for troops landing at Aitape and Hollandia on the northern coast of New Guinea.

On 12 June, she stood out of Kwajalein lagoon in company with TG 53.7, the Carrier Support Group built around Sangamon, Suwanee, and Chenango.

She and her charges remained with the invasion force throughout the decisive Battle of the Philippine Sea in which TF 58 shattered the remnants of Japanese naval air power.

Through the month of July, Abbot continued to shepherd the carriers while their aviators struck targets on Saipan and Guam in support of the American invasion troops.

She arrived at that New Guinea port on 26 October and remained there until 2 November when she returned to sea with a group of transports bound for Morotai in the northern Molucca Islands of the Netherlands East Indies (now part of Indonesia).

Provisioning and upkeep complete, Abbot put to sea on 2 January 1945 with TG 77.4, the Escort Carrier Group for the invasion of Luzon at Lingayen Gulf.

On 4 January, one aircraft succeeded in crashing into Ommaney Bay and damaged that escort carrier so badly that she was abandoned and sunk by a torpedo from Burns.

Abbot continued to provide antisubmarine and anti-air protection to the San Fabian group while aircraft from its carriers carried out prelanding bombing and strafing missions and, after the ninth, supported the invasion troops in their struggle to wrest the island from the Japanese.

In company with cruisers Denver, Cleveland, Montpelier, and three other destroyers, Abbot steamed up to support elements of the Army's 41st Infantry Division's assault on Puerto Princesa — the main port on Palawan.

On that day, she shaped a course back to San Pedro Bay and spent the next three weeks engaged in patrols and escort missions in the southern Philippines.

Her task group departed Leyte Gulf on 1 July bound for an operating area just to the east of the Japanese home islands, and Abbot steamed out with them.

Just after noon on 14 July, TG 34.8.1, a special force – composed of battleships South Dakota, Indiana, Massachusetts, cruisers Quincy, Chicago, Abbot, and eight other destroyers – was detached from the TF 38 screen and closed the shores of northern Honshū near the city of Kamaishi.

The following day, when Borie suffered a kamikaze hit, Abbot rendered assistance and escorted her to a rendezvous with hospital ship Rescue to evacuate casualties and thence to Saipan for repairs.

There, Abbot herself entered drydock where her damage was found to be sufficiently serious to warrant her retiring, via Hawaii, to the Puget Sound Navy Yard.

Later that month, she transited the Panama Canal and arrived in her new home port, Newport, Rhode Island For the remainder of 1951, the destroyer underwent repairs at the Philadelphia Naval Shipyard followed by refresher training out of Guantánamo Bay, Cuba.

Steaming via the Panama Canal, San Diego, Oahu, and Midway, she joined the 7th Fleet at Yokosuka, Japan, and operated in the South China Sea and in the Taiwan Strait until October.

The warship spent the period from September to November either alongside a tender or in the Boston Naval Shipyard undergoing preparations for a deployment to the Mediterranean.

Upon her return to the New England coast late in October, the ship resumed type training and exercises out of Newport and continued such duty for the rest of 1957.

Not long thereafter, President Camille Chamoun of Lebanon — whose country had been gripped by steadily intensifying civil strife — requested United States help in restoring order.

Abbot and the rest of DesRon 10 escorted amphibious forces to Vieques Island and, after a stop at San Juan, Puerto Rico, headed across the Atlantic to bolster those units.

Two weeks later, she anchored at Beirut, the Lebanese capital, to serve as gunfire support ship for the Marine Corps and Army troops operating ashore.

She completed repairs at the end of the summer and spent the month of September engaged in refresher training near Guantánamo Bay and at Culebra Island, Puerto Rico.

Supporting the sub-orbital flight of Freedom 7, Abbot was detailed to help recover the Mercury capsule after splash-down roughly 300 miles (480 km) east of Cape Canaveral, Florida.

The mission was designated MR-3, or Mercury-Redstone 3, and it was the United States's answer to the successful flight of Yuri Gagarin, the Soviet cosmonaut who became the first human in space.

Her routine of service along the east coast and in the West Indies training naval officers in their future duties on board destroyer-type warships was broken twice in 1962.

Then, in October, she participated in operations enforcing the quarantine of Cuba established by President John F. Kennedy after he learned that Soviet offensive missiles had been based on that island.