The Battle of Leyte Gulf was the largest naval battle of World War II and by some criteria the largest naval battle in history, with over 200,000 naval personnel involved.
The Casablanca-class escort carrier was a series of escort carriers constructed for the United States Navy during World War II. They are the most numerous class of aircraft carriers ever built. Fifty were laid down, launched and commissioned within the space of less than two years – 3 November 1942 through to 8 July 1944. Despite their numbers, and the preservation of more famous and larger carriers as museums, none of these modest ships survive today. Five were lost to enemy action during World War II and the remainder were scrapped.
The Battle off Samar was the centermost action of the Battle of Leyte Gulf, one of the largest naval battles in history, which took place in the Philippine Sea off Samar Island, in the Philippines on October 25, 1944. It was the only major action in the larger battle in which the Americans were largely unprepared. After the previous day's fighting, the Imperial Japanese Navy's First Mobile Striking Force, under the command of Takeo Kurita, had suffered significant damage and appeared to be retreating westward. However, by the next morning, the Japanese force had turned around and resumed its advance toward Leyte Gulf. With Admiral William Halsey Jr. lured into taking his powerful Third Fleet north after a decoy fleet and the Seventh Fleet engaged to the south, the recently-landed 130,000 men of the Sixth Army were left vulnerable to Japanese attack on Leyte.
USS Gambier Bay (CVE-73) was a Casablanca-class escort carrier of the United States Navy. During the Battle off Samar, part of the overall Battle of Leyte Gulf, during a successful effort to turn back a much larger attacking Japanese surface force, Gambier Bay was sunk by naval gunfire, primarily from the battleship Yamato, taking at least 15 hits between 8:10 and 8:40. She was the only American aircraft carrier sunk by enemy surface gunfire during World War II.
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 White Plains (CVE-66) was a Casablanca-class escort carrier of the United States Navy. She was named after the 1776 Battle of White Plains.
The Type 93 was a 610 mm (24 in)-diameter torpedo of the Imperial Japanese Navy (IJN), launched from surface ships. It is commonly referred to as the Long Lance by most modern English-language naval historians, a nickname given to it after the war by Samuel Eliot Morison, the chief historian of the U.S. Navy, who spent much of the war in the Pacific Theater. In Japanese references, the term Sanso gyorai is also used, in reference to its propulsion system. It was the most advanced naval torpedo in the world at the time.
Chikuma (筑摩) was the second and last vessel in the Tone class of heavy cruisers in the Imperial Japanese Navy. The ship was named after the Chikuma River in Nagano Prefecture. Entering service in 1939, Chikuma saw battle during World War II in the Pacific, hunting small allied ships in the Indian Ocean and serving in many escorting missions throughout many large-scale aircraft carrier battles between Japan and the United States. On the 25 of October 1944, she served in the Battle off Samar where she possibly sank the escort carrier USS Gambier Bay and damaged the destroyer USS Heermann, before being crippled by gunfire from the destroyer escort USS Samuel B. Roberts and sunk by air attacks.
USS Heermann (DD-532) was a World War II-era Fletcher-class destroyer in the service of the United States Navy. The ship entered service in 1943 and took part in several battles during World War II in the Pacific theatre of operations, including the Philippines campaign, Battle off Samar and the Battle of Iwo Jima among others. Heermann gained fame during the "last stand of the Tin Can Sailors" in which she and several other destroyers of Task Unit 77.4.3 engaged a far superior Japanese task force during the Battle off Samar in October 1944. Heermann was the only American destroyer of "Taffy 3" to survive the engagement. Following the end of the war in 1945, the ship was placed in reserve from 1946 to 1951, when the destroyer was reactivated. Heermann remained in active service until 1957, when the ship was returned to the reserve. In 1961, Heerman was loaned to Argentina and was renamed ARA Almirante Brown (D-20) while in service with the Argentinian Navy. Almirante Brown remained in Argentinian service until 1982, when the ship was decommissioned.
USS Johnston (DD-557) was a Fletcher-class destroyer built for the United States Navy during World War II. She was named after Lieutenant John V. Johnston, an officer of the US Navy during the American Civil War. Johnston was laid down in May 1942 and was launched on 25 March 1943. She entered active duty on 27 October 1943 under the command of Lieutenant Commander Ernest E. Evans and was assigned to the US Pacific Fleet. Johnston provided naval gunfire support for American ground forces during the Gilbert and Marshall Islands campaign in January and February 1944 and again, after three months of patrol and escort duty in the Solomon Islands, during the recapture of Guam in July. Thereafter, Johnston was tasked with escorting escort carriers during the Mariana and Palau Islands campaign and the liberation of the Philippines.
Takeo Kurita was a vice admiral in the Imperial Japanese Navy (IJN) during World War II. Kurita commanded IJN 2nd Fleet, the main Japanese attack force during the Battle of Leyte Gulf, the largest naval battle in history.
Myōkō (妙高) was the lead ship of the four-member Myōkō class of heavy cruisers of the Imperial Japanese Navy (IJN), which were active in World War II. She was named after Mount Myōkō in Niigata Prefecture. The other ships of the class were Nachi, Ashigara, and Haguro.
Chōkai (鳥海) was a Takao-class heavy cruiser, armed with ten 20 cm (8 in) guns, four 12 cm (5 in) guns, eight tubes for the Type 93 torpedo, and assorted anti-aircraft guns. Named for Mount Chōkai, Chōkai was designed with the Imperial Japanese Navy strategy of the great "Decisive Battle" in mind, and built in 1932 by Mitsubishi's shipyard in Nagasaki.
Rear Admiral Robert Witcher Copeland was a United States Navy officer who served during World War II.
Samuel Booker Roberts Jr. was a U.S. Navy coxswain who was killed in the Battle of Guadalcanal, and became the namesake of three U.S. Navy warships.
Ernest Edwin Evans was an officer of the United States Navy who posthumously received the Medal of Honor for his actions during the Battle off Samar in World War II.
The Takao-class cruiser (高雄型) was a class of four heavy cruisers of the Imperial Japanese Navy (IJN) launched between May 1930 and April 1931. All served during World War II.
The John C. Butler class were destroyer escorts that originated during World War II. The lead ship was USS John C. Butler, commissioned on 31 March 1944. The class was also known as the WGT type from their Westinghouse geared turbine drive. Of the 293 ships originally planned, 206 were canceled in 1944 and a further four after being laid down; three were not completed until after the end of World War II.
The nonfiction book The Last Stand of the Tin Can Sailors: The Extraordinary World War II Story of the U.S. Navy's Finest Hour is the first full narrative account of the Battle off Samar, which the book's author, James D. Hornfischer, calls the greatest upset in the history of naval warfare. Published by Bantam Books in February 2004, the book won the Samuel Eliot Morison Award for Naval Literature in 2004 from the Naval Order of the United States.
Limiting Factor, known as Bakunawa since its sale in 2022, is a crewed deep-submergence vehicle (DSV) manufactured by Triton Submarines and owned and operated since 2022 by Gabe Newell’s Inkfish ocean-exploration research organization. It currently holds the records for the deepest crewed dives in all five oceans. Limiting Factor was commissioned by Victor Vescovo for $37 million and operated by his marine research organization, Caladan Oceanic, between 2018-2022. It is commercially certified by DNV for dives to full ocean depth, and is operated by a pilot, with facilities for an observer.
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