At dusk on 11 April 1942, she picked up 290 survivors from the torpedoed merchant passenger steamer SS
Ulysses, and landed them at
Charleston, South Carolina the following day. On 13 July 1942
Manley transited the Panama Canal for duty with the
Pacific Fleet. Touching the
Society and
Fiji Islands, she reached
Espiritu Santo,
New Hebrides on 14 August, and loaded special cargo for
Guadalcanal, invaded only one week earlier. Carrying bombs, ammunition, and gasoline,
Manley and got underway on 16 August. After exchanging their cargo for wounded marines, they returned to Espiritu Santo on the 19th.
Manley was ordered to take torpedoed in tow for
Tulagi harbor before nightfall. Since a
Japanese surface force was approaching, it was necessary to scuttle the destroyer.
Manley took 99 survivors on board. Only two hours of fuel remained when the ship made it back to Espiritu Santo on the 26th. Ordered to cut out all topside weight on the ship, her crew removed everything not essential to survival, painted the ship jungle green and covered her with camouflage nets. Thus arrayed, the high-speed transport made another trip to Guadalcanal on 3 September 1942. After and were sunk on the night of 5 September, she rescued five survivors the next morning. On 8 September 1942
Manley took part in a surprise landing on
Taivu Point, Guadalcanal, by the
1st Marine Raider Battalion. The leathernecks were put ashore at 05:00, and were reinforced by
paramarines from
Manley at 11:30. During the operation she bombarded
Tasimboko village. The raid was a great success, and played an important role in final victory. Stores, ammunition, and equipment were destroyed and many 75 mm guns were pulled off into deep water by
Higgins boats. Larger guns were dynamited, and their ammunition sunk. Reembarkation was completed by 18:30, and
Manley returned to
Lunga Point to put the raiders ashore. As she was unloading, the shore station ordered her to clear out at highest speed, since a raid by Japanese heavy units was expected momentarily. With 200 marines, including wounded and dead, on board, she hoisted all boats and headed out
Lengo Channel with at 21:10.
Manley had fuel for only one day's operations and so returned to Tulagi the next day. Taking on enough fuel to reach Espiritu Santo, she was routed onward for voyage repairs at
Nouméa,
New Caledonia. A company of marine raiders came on board on 31 October 1942 with orders to establish a beachhead at
Aola Bay, Guadalcanal. Task Force 65 (TF 65) put the marines ashore on 4 November 1942, and troops from
Manley and
McKean reinforced them on the 8th. The versatile fighting ship left Nouméa on 20 November 1942 carrying six torpedoes, towing two
PT boats, and escorting SS
Pomona to Espiritu Santo. Here she embarked another company of raiders and sailed for Lunga Point, Guadalcanal where the raiders debarked. The PT boats and
torpedoes were then delivered to Tulagi, Solomon Islands. In the following months, the high-speed transport was constantly engaged in the risky business of running supplies into Guadalcanal and escorting other ships through the dangerous Solomons.
Manley arrived at
San Francisco, California on 12 June 1943 for overhaul at
Hunters Point Navy Yard. Then, on 1 August 1943,
Manley set sail for
Hawaii. From
Pearl Harbor, the veteran four-piper escorted a convoy south to
Funafuti to resume her former duties in the
Solomon Islands.
Manley arrived at Pearl Harbor on 14 December 1943 and joined the
V Amphibious Corps to prepare for
Operation Flintlock, the invasion of the
Marshall Islands. She sortied on 22 January 1944 with TF 52. On the 30th she and were detached to make a dawn strike on Carter and Cecil Islands of
Kwajalein Atoll. All boats and troops were launched shortly before sunrise on 31 January 1944, and by 09:00 reported that they had killed 13 of the enemy on the island at a cost of one American killed and one wounded. The two high-speed transports were ordered to land
7th Cavalry Regiment reconnaissance troops on Bennett Islands before dawn on 5 February, and
Manley was designated fire support ship. The area was well-covered, and the operation went off on schedule. Three days later
Manley got underway as part of a transport screen for Hawaii, arriving Pearl Harbor on the 15th to train Army troops for future landings. On 30 May
Manley joined Task Group 52.15 (TG 52.15) and departed for the
invasion of Saipan. The high-speed transports arrived off
Saipan on the night of 14 June and landed their marines on established beaches south of
Garapan on 16 June. Thereafter, except for a trip to
Eniwetok for supplies and night harassing fire on
Tinian Town and airports on the nights of 9, 12, and 18 July
Manley operated in the transport screen until 22 July. She returned to Eniwetok on the 22nd and, after a trip to Kwajalein, sailed to Pearl Harbor, arriving on 9 August, she began preparations for the next operation. On 10 September
Manley took on board 50 tons of explosives, slated as reserves for
underwater demolition team work in the proposed invasion of
Yap. She left Pearl Harbor on the 15th and proceeded via Eniwetok to Manus,
Admiralty Islands. There word arrived that the operation against Yap had been canceled and that the forces assembled would strike
Leyte in the
Philippines.
Manley was then assigned to the bombardment and fire support group which arrived in
Leyte Gulf early on 18 October. After entering Leyte Gulf,
Manley was assigned screening stations off the southern transport area at Dulag. On the 19th she picked up casualties from , and transferred them to . After marking a navigational buoy during the early morning hours of the 20th, she headed toward
Hollandia with TransDiv 28, on the evening of 21 October. En route, part of the convoy, including
Manley, was diverted to
Seeadler Harbor, Manus, Admiralty Islands, and anchored there on the 27th. After an escort trip to New Guinea,
Manley returned to Seeadler Harbor. In mid-December, she shifted to
Noemfoor Island for tactical exercises and training for the
liberation of Luzon.
Manley sailed on 4 January 1945 as part of a reinforcement group for the landings at
Lingayen Gulf,
Luzon, landing her embarked troops on the 11th. Two days later she left Lingayen, escorting an
LST convoy which anchored in Leyte Gulf on 18 January.
Manley was one of four high-speed transports assigned to an assault landing at
Nasugbu, Luzon, on 31 January. With elements of the
11th Airborne Division,
Manley arrived at
Nasugbu Bay on 31 January and landed troops in two waves without resistance. That afternoon
Manley returned to Leyte. She proceeded to Mindoro for fueling, and then escorted a convoy to
Subic Bay. To block retreat by the Japanese into
Bataan,
Manley with TransDiv 100 and six
LCI(L)'s, put some 700 assault troops ashore at
Mariveles on 15 February 1945. On the 17th, she landed troops on
Corregidor. Hidden gun emplacements shelled her boats, sinking one and wounding an
Army officer, but the landings succeeded. That evening the transport returned to Subic Bay. On 2 April the transport joined the screen of
escort aircraft carriers loaded with the first land-based planes to be sent to
Okinawa. The first section of the task group launched planes to land on Okinawa on 7 April 1945. The following day ''Manley's
task group closed the islands to launch the remainder of the aircraft for landing strips on that bitterly contested "last stepping stone" to Japan. Manley'' dropped depth charges on a submarine contact during the launch. Then she protected escort carriers and to Guam. ==1945 and the end of the war==