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Alva B. Lasswell
Alva Bryan "Red" Lasswell (January 3, 1905 – October 28, 1988) was a United States Marine Corps linguist and cryptanalyst during World War II. In 1942, he contributed to the identification of Midway Atoll as the Japanese military target codenamed AF. In April 1943, Lasswell helped decrypt the coded itinerary of Admiral Isoroku Yamamoto, leading to his interception by Army Air Forces fighter planes near Rabaul. Early life and education Lasswell was born in McLeansboro, Illinois, but raised in Piggott, Arkansas. He attended Piggott High School and Rector High School, but never graduated. He was homeschooled by his father Charles, a teacher, and showed an aptitude for mathematics. In 1921, Lasswell moved to Oklahoma and found work as an accountant. Military career Lasswell enlisted in the U.S. Marine Corps in 1925. Selected for officer candidate school, he was commissioned as a second lieutenant on June 8, 1929. From 1932 to 1933, he served with the Marine detachment on . ...
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McLeansboro, Illinois
McLeansboro () is a city in Hamilton County, Illinois, Hamilton County, Illinois, United States. The population was 2,675 at the 2020 United States Census, 2020 census. The estimated population as of 2018 was 2,773. It is the county seat of Hamilton County. McLeansboro is part of the Mount Vernon, Illinois micropolitan area. Geography McLeansboro is located at (38.093115, -88.536213). According to the 2010 census, McLeansboro has a total area of , of which (or 95.22%) is land and (or 4.78%) is water. History The city was named for Dr. William McLean, an early settler who had officially resided there in 1821 . Demographics As of the census of 2000, there were 2,945 people, 1,265 households, and 747 families residing in the city. The population density was . There were 1,444 housing units at an average density of . The racial makeup of the city was 98.10% White (U.S. Census), White, 0.78% African American (U.S. Census), African American, 0.03% Native American (U.S. Census), ...
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5th Marine Regiment
The 5th Marine Regiment (also referred to as "5th Marines") is an infantry regiment of the United States Marine Corps based at Marine Corps Base Camp Pendleton, California. It is the most highly decorated regiment in the Marine Corps and falls under the command of the 1st Marine Division and the I Marine Expeditionary Force (I MEF). Current Units The Regiment comprises four infantry battalions and one headquarters company: * Headquarters Company 5th Marines (HQ/5th Marines) * 1st Battalion, 5th Marines (1/5) * 2nd Battalion, 5th Marines (2/5) * 3rd Battalion, 5th Marines (3/5) * 2nd Battalion, 4th Marines (2/4) – (assigned to the 5th Marine Regiment for the purpose of facilitating 4th Marines as a "host" regimental headquarters for battalions on unit deployment program assignments to 3rd MARDIV on Okinawa.) History World War I The unit was activated on June 8, 1917, in Philadelphia, Pennsylvania, as the 5th Regiment of Marines. They immediately deployed to France, arrivi ...
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Chester W
Chester is a cathedral city and the county town of Cheshire, England. It is located on the River Dee, close to the English–Welsh border. With a population of 79,645 in 2011,"2011 Census results: People and Population Profile: Chester Locality"; downloaded froCheshire West and Chester: Population Profiles, 17 May 2019 it is the most populous settlement of Cheshire West and Chester (a unitary authority which had a population of 329,608 in 2011) and serves as its administrative headquarters. It is also the historic county town of Cheshire and the second-largest settlement in Cheshire after Warrington. Chester was founded in 79 AD as a "castrum" or Roman fort with the name Deva Victrix during the reign of Emperor Vespasian. One of the main army camps in Roman Britain, Deva later became a major civilian settlement. In 689, King Æthelred of Mercia founded the Minster Church of West Mercia, which later became Chester's first cathedral, and the Angles extended and strengthened t ...
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Joseph Rochefort
Joseph John Rochefort (May 12, 1900 – July 20, 1976) was an American naval officer and cryptanalyst. He was a major figure in the United States Navy's cryptographic and intelligence operations from 1925 to 1946, particularly in the Battle of Midway. His contributions and those of his team were pivotal to victory in the Pacific War. Early career Rochefort was born in Dayton, Ohio. In 1917, he joined the United States Navy while still in high school in Los Angeles, without obtaining a diploma. He enlisted in the Navy in 1918, lying that he was born in 1898 so as to appear almost 21 and eligible for the service. This adjustment lasted his entire career. He was commissioned as an ensign after a 14 June 1919 graduation from the US Navy's Steam Engineering School at Stevens Institute of Technology, and later in 1919 became engineering officer of the tanker USS ''Cuyama''. A fellow officer observed that Rochefort had a penchant for solving crossword puzzles and adept skills at playi ...
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Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender in World War II. The Japan Maritime Self-Defense Force (JMSDF) was formed between 1952–1954 after the dissolution of the IJN. The Imperial Japanese Navy was the third largest navy in the world by 1920, behind the Royal Navy and the United States Navy (USN). It was supported by the Imperial Japanese Navy Air Service for aircraft and airstrike operation from the fleet. It was the primary opponent of the Western Allies in the Pacific War. The origins of the Imperial Japanese Navy go back to early interactions with nations on the Asian continent, beginning in the early medieval period and reaching a peak of activity during the 16th and 17th centuries at a time of cultural exchange with European powers during the Age of Discovery. After t ...
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Battle Of The Coral Sea
The Battle of the Coral Sea, from 4 to 8 May 1942, was a major naval battle between the Imperial Japanese Navy (IJN) and naval and air forces of the United States and Australia. Taking place in the Pacific Theatre of World War II, the battle is historically significant as the first action in which the opposing fleets neither sighted nor fired upon one another, attacking over the horizon with aircraft carriers instead. To strengthen their defensive position in the South Pacific, the Japanese decided to invade and occupy Port Moresby (in New Guinea) and Tulagi (in the southeastern Solomon Islands). The plan, Operation Mo, involved several major units of Japan's Combined Fleet. Two fleet carriers and a light carrier were assigned to provide air cover for the invasion forces, under the overall command of Admiral Shigeyoshi Inoue. The U.S. learned of the Japanese plan through signals intelligence and sent two U.S. Navy carrier task forces and a joint Australian-American cruise ...
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Pearl Harbor
Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the Naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reciprocity Treaty of 1875. Much of the harbor and surrounding lands are now a United States Navy deep-water naval base. It is also the headquarters of the United States Pacific Fleet. The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887. The surprise attack by the Imperial Japanese Navy on December 7, 1941, led the United States to declare war on the Empire of Japan, making the attack on Pearl Harbor the immediate cause of the United States' entry into World War II. History Pearl Harbor was originally an extensive shallow embayment called ''Wai Momi'' (meaning, “Waters of Pearl”) or ''Puuloa'' (meaning, “long hill”) by the Hawaiians. Puuloa was r ...
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Station HYPO
Station , also known as Fleet Radio Unit Pacific () was the United States Navy signals monitoring and cryptographic intelligence unit in Hawaii during World War II. It was one of two major Allied signals intelligence units, called Fleet Radio Units in the Pacific theaters, along with in Melbourne, Australia. The station took its initial name from the phonetic code at the time for "H" for Heʻeia, Hawaii radio tower. The precise importance and role of in penetrating the Japanese naval codes has been the subject of considerable controversy, reflecting internal tensions amongst US Navy cryptographic stations. was under the control of the OP-20-G Naval Intelligence section in Washington. Before the attack on Pearl Harbor of December 7, 1941, and for some time afterward, was in the basement of the Old Administration Building at Pearl Harbor. Later on, a new building was constructed for the station, though it had been reorganized and renamed by then. Background Cryptic problems fa ...
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Shanghai
Shanghai (; , , Standard Mandarin pronunciation: ) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flowing through it. With a population of 24.89 million as of 2021, Shanghai is the most populous urban area in China with 39,300,000 inhabitants living in the Shanghai metropolitan area, the second most populous city proper in the world (after Chongqing) and the only city in East Asia with a GDP greater than its corresponding capital. Shanghai ranks second among the administrative divisions of Mainland China in human development index (after Beijing). As of 2018, the Greater Shanghai metropolitan area was estimated to produce a gross metropolitan product (nominal) of nearly 9.1 trillion RMB ($1.33 trillion), exceeding that of Mexico with GDP of $1.22 trillion, the 15th largest in the world. Shanghai is one of the world's major centers for ...
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Joseph Finnegan (cryptographer)
Joseph Finnegan (August 12, 1905 – September 8, 1980) was a United States Navy linguist and cryptanalyst with Station Hypo during the Second World War. Early life and education Joseph Finnegan was born and raised in Dorchester, Massachusetts. His father was Peter Joseph Finnegan and his mother was the former Marion Catherine Connor. Joseph Finnegan had a brother and four sisters. He enlisted in the U.S. Navy in 1922 as an apprentice seaman and later served as a yeoman third class on the battleship . Finnegan attended the Naval Academy preparatory school in San Diego, California, and finished first in his class. Appointed to the United States Naval Academy, he graduated fifteenth in a class of 153 in 1928. Finnegan served as an ensign on the battleship from August 1928 to November 1930. Promoted to lieutenant (junior grade) in 1931, he helped commission the heavy cruiser in February 1934 and then served as her radio officer.Maffeo, p. 238Retrieved 2020-02-07. Later in ...
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Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republika sang Filipinas * ibg, Republika nat Filipinas * ilo, Republika ti Filipinas * ivv, Republika nu Filipinas * pam, Republika ning Filipinas * krj, Republika kang Pilipinas * mdh, Republika nu Pilipinas * mrw, Republika a Pilipinas * pag, Republika na Filipinas * xsb, Republika nin Pilipinas * sgd, Republika nan Pilipinas * tgl, Republika ng Pilipinas * tsg, Republika sin Pilipinas * war, Republika han Pilipinas * yka, Republika si Pilipinas In the recognized optional languages of the Philippines: * es, República de las Filipinas * ar, جمهورية الفلبين, Jumhūriyyat al-Filibbīn is an archipelagic country in Southeast Asia. It is situated in the western Pacific Ocean and consists of around 7,641 islands t ...
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Station CAST
Station CAST was the United States Navy signals monitoring and cryptographic intelligence fleet radio unit at Cavite Navy Yard in the Philippines, until Cavite was captured by the Japanese forces in 1942, during World War II. It was an important part of the Allied intelligence effort, addressing Japanese communications as the War expanded from China into the rest of the Pacific theaters. As Japanese advances in the Philippines threatened CAST, its staff and services were progressively transferred to Corregidor in Manila Bay, and eventually to a newly formed US-Australian station, FRUMEL in Melbourne, Australia. STATION CAST had originally been located at Shanghai but had been evacuated to Cavite in early 1941 as part of the US Navy's disengagement with China. Prior to the war, CAST was the US Navy's Far East cryptographic operation, under the OP-20-G Naval Intelligence section in Washington. It was located at the Navy Yard in Manila and moved into the tunnels on Corregidor, a ...
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