On 15 June 1944, United States Marine and Army forces landed on the southwest coast of the island of Saipan in the central Marianas chain. US forces declared Saipan secure on 9 July.
Marine Corps forces landed on the nearby island of Tinian on 24 July. Tinian was declared secure 1 August.
The naval forces involved can be summarized as follows:
The roles of Commander in Chief, Pacific Ocean Areas (CINCPOA) and Commander in Chief, U.S. Pacific Fleet (CINCPAC), were both exercised by Admiral Chester W. Nimitz from his headquarters at Pearl Harbor, Hawaii.
Since the Marianas lie in the Central Pacific, their capture was the responsibility of the U.S. Fifth Fleet, led by Vice Admiral Raymond A. Spruance from aboard his flagship, heavy cruiser Indianapolis.
The ships and embarked troops of Operation Forager were under direct operational command of Rear Admiral Richmond Kelly Turner aboard amphibious command ship Rocky Mount .
The Marine and Army landing forces for Operation Forager were under the command of Maj. Gen. Holland M. "Howlin' Mad" Smith , USMC. Smith directed the ground troops from aboard Vice Adm. Turner's flagship Rocky Mount until the afternoon of 17 June when he set up his command post ashore.
V Amphibious Corps (Maj. Gen. Holland M. Smith, USMC)
U.S. Fifth Fleet [1]
Admiral Raymond A. Spruance in heavy cruiser Indianapolis
Joint Expeditionary Force (Task Force 51)
Vice Admiral Richmond Kelly Turner in amphibious command ship Rocky Mount
Rear Adm. Gerald F. Bogan
Rear Adm. H.B. Sallada
Rear Adm. Jesse B. Oldendorf
Rear Adm. Walden L. Ainsworth
Commodore P.S. Theiss
Capt. H.B. Knowles
Embarking 2nd Marine Division
Capt. D.W. Loomis
Embarking 4th Marine Division
Cmdr. C.J. McWhinnie
Embarking 1st Battalion, 2nd Marines [lower-alpha 2]
Capt. R.E. Libby
Capt. A.J. Robertson
Cmdr. R.S. Moore, USNR
Rear Adm. William H.P. Blandy
Embarking 27th Infantry Division (Army)
Capt. S.E. Peck
Capt. Edward E. Paré
USS St. Lo (AVG/ACV/CVE–63) was a Casablanca-class escort carrier of the United States Navy during World War II. On 25 October 1944, St. Lo became the first major warship to sink as the result of a kamikaze attack. The attack occurred during the Battle off Samar, part of the larger Battle of Leyte Gulf.
USS Petrof Bay (CVE-80) was the twenty-sixth of fifty Casablanca-class escort carriers built for the United States Navy during World War II. She was named after Petrof Bay, which in turn was named in 1928 after Ivan Petroff, a Russian Alaskan who served as a special census agent for the 1880 United States census. The bay is located within Kuiu Island, which at the time was a part of the Territory of Alaska. The ship was launched in January 1944, commissioned in February, and served in support of the Mariana and Palau Islands campaign, the Philippines campaign, including the Battle off Samar, the Battle of Iwo Jima, and the Battle of Okinawa. She was decommissioned in July 1946, when she was mothballed in the Atlantic Reserve Fleet. Postwar, she participated in Operation Magic Carpet. Ultimately, she was broken up in September 1959.
This is the order of battle for the Guadalcanal Campaign, called Operation Watchtower, the first major Allied offensive in the Pacific Theater of Operations in World War II. The campaign lasted from the initial American landings on 7 August 1942 until the final Japanese evacuation on 9 February 1943, a period of six months, far longer than was expected by Allied planners.
This is the order of battle for the Battle of Midway, a major engagement of the Pacific Theatre of World War II, fought 4–7 June 1942 by naval and air forces of Imperial Japan and the United States in the waters around Midway Atoll in the far northwestern Hawaiian Islands.
The Battle of the Coral Sea, a major engagement of the Pacific Theatre of World War II, was fought 4–8 May 1942 in the waters east of New Guinea and south of the Bismarck Islands between elements of the Imperial Japanese Navy and Allied naval and air forces from the United States (U.S.) and Australia.
USS Fullam (DD-474) was a Fletcher-class destroyer in the United States Navy during World War II. Fullam was named for Rear Admiral William Fullam (1855-1926).
USS Halford (DD-480), a Fletcher-class destroyer, was a ship of the United States Navy named for Lieutenant William Halford (1841–1919), a recipient of the Medal of Honor.
USS Robinson (DD-562), a Fletcher-class destroyer, was the second ship of the United States Navy to be named for Captain Isaiah Robinson, who served in the Continental Navy.
USS Lardner (DD-487), a Gleaves-class destroyer, was the second United States Navy ship to be named for Rear Admiral James L. Lardner, a Naval officer during the American Civil War. Lardner received 10 battle stars for World War II service.
USS Bryant (DD-665) was a Fletcher-class destroyer of the United States Navy, named for Rear Admiral Samuel W. Bryant (1877–1938).
USS Monssen (DD-798) was a Fletcher-class destroyer of the United States Navy, the second Navy ship named for Lieutenant Mons Monssen (1867–1930), who was awarded the Medal of Honor for putting out a fire in a magazine on Missouri.
On 20 November 1943, simultaneous landings were made by United States Marine Corps forces on Tarawa and United States Army forces on Makin, two coral atolls located in the Gilbert Islands chain in the South-Central Pacific.
The Battle of Leyte Gulf, generally considered to be the largest naval combat in history, was fought 24–25 October 1944 in the waters of the Philippine Islands by elements of the Imperial Japanese Navy's Combined Fleet and the United States Navy's Pacific Fleet. Of the five separate engagements that made up the battle as a whole, the forces involved in the three principal ones are listed here.
The Battle of the Philippine Sea was fought 19–20 June 1944 in the waters west of the Mariana Islands by elements of the Imperial Japanese Navy's Combined Fleet and of the United States Navy's Pacific Fleet. The battle resulted from the Japanese reaction to the American invasion of the island of Saipan. Instead of attacking the troop transports off Saipan, Admiral Toyoda chose to engage the American carrier forces in what he intended to be the long-awaited “decisive battle” that would crush U.S. naval power.
For the April 1945 invasion of Okinawa, the Allies assembled the most powerful naval force in history. Since the few remaining capital ships of the Imperial Japanese Combined Fleet had been sunk or otherwise put out of action at the Battle of Leyte Gulf, the Allies were effectively unopposed in terms of major surface vessels; a single mission consisting of the superbattleship Yamato and a few escorts was undertaken, but the task force did not get within 200 nautical miles of the invasion area. The main Japanese naval opposition within the invasion area came from hundreds of Imperial Japanese Navy Shin'yō-class suicide motorboats and Maru-Ni Imperial Japanese Army attack boats.
On 7 August 1942, US and Australian naval forces undertook the invasion of the Japanese-held islands of Guadalcanal and Tulagi in the lower Solomon Islands chain, the first Allied offensive in the Pacific Theatre. The landing of the US 1st Marine Division on the beaches of Savo Sound began the unexpectedly long and extremely arduous Guadalcanal Campaign, lasting officially until 9 February 1943.
The Battle of the Eastern Solomons was fought August 23–25, 1942 in the waters east and northeast of the Solomon Islands by forces of the Imperial Japanese Navy's Combined Fleet and the US Navy's Pacific Fleet. The battle resulted from a major effort by the Japanese to reinforce their troop strength on the island of Guadalcanal. The Japanese high command had realized this reinforcement was necessary following the annihilation of the Ichiki Detachment by the 1st Marines a few days earlier.
Operation Avalanche was the codename for the combined US and British landings on the southwest coast of Italy on 9 September 1943 as part of the Allied effort in the Mediterranean Theater during World War II. The forces landed consisted of the US Fifth Army under Lieutenant General Mark W. Clark. The Fifth Army was made up of the British X Corps, which landed south of the town of Salerno, and the US VI Corps, which landed at the town of Paestum.
The Battle of the Santa Cruz Islands was fought 25–27 October 1942 in the waters northwest of the Santa Cruz Islands by forces of the Imperial Japanese Navy's (IJN) Combined Fleet and the United States Navy's (USN) Pacific Fleet. The battle resulted from a major Japanese offensive with the goal to drive the US forces from Guadalcanal.
On 17 October 1944, troops of the United States Sixth Army under the direct command of Lieutenant General Walter Krueger, invaded the Philippine island of Leyte. This operation was the beginning of General Douglas MacArthur's fulfillment of his promise in March 1942 to the Filipino people that he would liberate them from Japanese rule.