Topic: Military history (Page 5)

You are looking at all articles with the topic "Military history". We found 256 matches.

Hint: To view all topics, click here. Too see the most popular topics, click here instead.

πŸ”— Apollo 11 50th Anniversary

πŸ”— Spaceflight πŸ”— Military history πŸ”— Military history/Military aviation πŸ”— Military history/Maritime warfare πŸ”— Moon πŸ”— Smithsonian Institution-related πŸ”— National Archives

Apollo 11 was the spaceflight that first landed humans on the Moon. Commander Neil Armstrong and lunar module pilot Buzz Aldrin formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17 UTC. Armstrong became the first person to step onto the lunar surface six hours and 39 minutes later on July 21 at 02:56 UTC; Aldrin joined him 19 minutes later. They spent about two and a quarter hours together outside the spacecraft, and they collected 47.5 pounds (21.5Β kg) of lunar material to bring back to Earth. Command module pilot Michael Collins flew the Command Module Columbia alone in lunar orbit while they were on the Moon's surface. Armstrong and Aldrin spent 21 hours, 36 minutes on the lunar surface at a site they named Tranquility Base before lifting off to rejoin Columbia in lunar orbit.

Apollo 11 was launched by a Saturn V rocket from Kennedy Space Center on Merritt Island, Florida, on July 16 at 13:32 UTC, and it was the fifth crewed mission of NASA's Apollo program. The Apollo spacecraft had three parts: a command module (CM) with a cabin for the three astronauts, the only part that returned to Earth; a service module (SM), which supported the command module with propulsion, electrical power, oxygen, and water; and a lunar module (LM) that had two stagesβ€”a descent stage for landing on the Moon and an ascent stage to place the astronauts back into lunar orbit.

After being sent to the Moon by the Saturn V's third stage, the astronauts separated the spacecraft from it and traveled for three days until they entered lunar orbit. Armstrong and Aldrin then moved into Eagle and landed in the Sea of Tranquility on July 20. The astronauts used Eagle's ascent stage to lift off from the lunar surface and rejoin Collins in the command module. They jettisoned Eagle before they performed the maneuvers that propelled Columbia out of the last of its 30 lunar orbits onto a trajectory back to Earth. They returned to Earth and splashed down in the Pacific Ocean on July 24 after more than eight days in space.

Armstrong's first step onto the lunar surface was broadcast on live TV to a worldwide audience. He described the event as "one small step for [a] man, one giant leap for mankind." Apollo 11 effectively ended the Space Race and fulfilled a national goal proposed in 1961 by President John F. Kennedy: "before this decade is out, of landing a man on the Moon and returning him safely to the Earth."

Discussed on

πŸ”— En svensk tiger

πŸ”— Military history πŸ”— Military history/World War II πŸ”— Sweden πŸ”— Military history/Nordic military history πŸ”— Military history/European military history

En svensk tiger (Swedish:Β [Ι›n ˈsvΙ›nːsk ˈtǐːɑɛr]) was a slogan and an image that became part of a propaganda campaign in Sweden during World War II. Its goal was to prevent espionage by encouraging secrecy.

Discussed on

πŸ”— Pig War

πŸ”— United States πŸ”— Military history πŸ”— Military history/North American military history πŸ”— Military history/United States military history πŸ”— Canada πŸ”— Agriculture πŸ”— Canada/British Columbia πŸ”— United States/Washington πŸ”— Canada/Geography of Canada πŸ”— Military history/European military history πŸ”— Military history/British military history πŸ”— Agriculture/Livestock

The Pig War was a confrontation in 1859 between the United States and United Kingdom over the British–U.S. border in the San Juan Islands, between Vancouver Island (present-day Canada) and the State of Washington. The Pig War, so called because it was triggered by the shooting of a pig, is also called the Pig Episode, the Pig and Potato War, the San Juan Boundary Dispute and the Northwestern Boundary Dispute. Aside from the death of one pig, this dispute was a bloodless conflict.

Discussed on

πŸ”— Pykrete

πŸ”— Technology πŸ”— Military history πŸ”— Military history/North American military history πŸ”— Military history/Military science, technology, and theory πŸ”— Architecture πŸ”— United Kingdom πŸ”— Transport πŸ”— Military history/Maritime warfare πŸ”— Military history/World War II πŸ”— Civil engineering πŸ”— Engineering πŸ”— Transport/Maritime πŸ”— Military history/Canadian military history πŸ”— Military history/European military history πŸ”— Military history/British military history

Pykrete is a frozen ice alloy , originally made of approximately 14 percent sawdust or some other form of wood pulp (such as paper) and 86 percent ice by weight (6 to 1 by weight). During World War II, Geoffrey Pyke proposed it as a candidate material for a supersized aircraft carrier for the British Royal Navy. Pykrete features unusual properties, including a relatively slow melting rate due to its low thermal conductivity, as well as a vastly improved strength and toughness compared to ordinary ice. These physical properties can make the material comparable to concrete, as long as the material is kept frozen.

Pykrete is slightly more difficult to form than concrete, as it expands during the freezing process. However, it can be repaired and maintained using seawater as a raw material. The mixture can be moulded into any shape and frozen, and it will be tough and durable, as long as it is kept at or below freezing temperature. Resistance to gradual creep or sagging is improved by lowering the temperature further, to βˆ’15Β Β°C (5Β Β°F).

Discussed on

πŸ”— Unit 731

πŸ”— United States πŸ”— Russia πŸ”— Military history πŸ”— United States/Military history - U.S. military history πŸ”— Korea πŸ”— China πŸ”— Military history/World War II πŸ”— Japan πŸ”— Russia/history of Russia πŸ”— Japan/Japanese military history πŸ”— Military history/Asian military history πŸ”— Military history/Japanese military history πŸ”— Korea/Korean military history

Unit 731 (Japanese: 731ιƒ¨ιšŠ, Hepburn: Nana-san-ichi Butai), also referred to as Detachment 731, the 731 Regiment, Manshu Detachment 731, The Kamo Detachment, Ishii Unit, Ishii Detachment or the Ishii Company, was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that undertook lethal human experimentation during the Second Sino-Japanese War (1937–1945) of World War II. It was responsible for some of the most notorious war crimes carried out by Imperial Japan. Unit 731 was based at the Pingfang district of Harbin, the largest city in the Japanese puppet state of Manchukuo (now Northeast China), and had active branch offices throughout China and Southeast Asia.

Its parent program was officially known as the Epidemic Prevention and Water Purification Department of the Kwantung Army (ι–’ζ±θ»ι˜²η–«η΅¦ζ°΄ιƒ¨ζœ¬ιƒ¨, Kantōgun Bōeki KyΕ«suibu Honbu). Originally set up under the Kempeitai military police of the Empire of Japan, Unit 731 was taken over and commanded until the end of the war by General Shirō Ishii, a combat medic officer in the Kwantung Army. The facility itself was built in 1935 as a replacement for the Zhongma Fortress, and to expand the capabilities for Ishii and his team. The program received generous support from the Japanese government up to the end of the war in 1945.

Unit 731 and the other Units of the "Epidemic Prevention and Water Purification Department" were biological weapon production, testing, deployment and storage facilities. They routinely tested on human beings (who were referred to internally as "logs"). Additionally, the biological weapons were tested in the field on cities and towns in China. Estimates of those killed by Unit 731 and its related programs range up to half a million people.

The researchers involved in Unit 731 were secretly given immunity by the U.S. in exchange for the data they gathered through human experimentation. Other researchers that the Soviet forces managed to arrest first were tried at the Khabarovsk War Crime Trials in 1949. The Americans did not try the researchers so that the information and experience gained in bio-weapons could be co-opted into the U.S. biological warfare program, much as they had done with German researchers in Operation Paperclip. On 6 May 1947, Douglas MacArthur, as Supreme Commander of the Allied Forces, wrote to Washington that "additional data, possibly some statements from Ishii, can probably be obtained by informing Japanese involved that information will be retained in intelligence channels and will not be employed as 'War Crimes' evidence". Victim accounts were then largely ignored or dismissed in the West as communist propaganda.

Discussed on

πŸ”— Holden's Lightning Flight

πŸ”— Aviation πŸ”— Military history πŸ”— Military history/Military aviation πŸ”— Aviation/Aviation accident project πŸ”— Wiltshire πŸ”— Military history/European military history πŸ”— Military history/British military history

On 22 July 1966 Walter "Taffy" Holden, an engineer in command of No. 33 Maintenance Unit RAF with limited experience flying small single-engine trainer aircraft, inadvertently engaged the afterburner of a Mach 2.0-capable English Electric Lightning during ground testing. Unable to disengage the afterburner, Holden ran down the runway, narrowly missing a crossing fuel bowser and a de Havilland Comet taking off, before taking off himself. Flying without a helmet or canopy, the ejection seat disabled, and the landing gear locked down, Holden aborted his first two landing attempts. He landed on his third approach, striking the runway with the aircraft's tail as he adopted in his flare the attitude of a taildragger aircraft. The aircraft returned to service, and was subsequently acquired by the Imperial War Museum Duxford.

Discussed on

πŸ”— Crypto AG

πŸ”— United States πŸ”— Mass surveillance πŸ”— Espionage πŸ”— Companies πŸ”— Military history πŸ”— Military history/North American military history πŸ”— Military history/United States military history πŸ”— Military history/Military science, technology, and theory πŸ”— Military history/Intelligence πŸ”— Cryptography πŸ”— Cryptography/Computer science πŸ”— Switzerland πŸ”— Military history/Cold War πŸ”— Sweden

Crypto AG was a Swiss company specialising in communications and information security. It was secretly jointly owned by the American Central Intelligence Agency (CIA) and West German Federal Intelligence Service (BND) from 1970 until about 1993, with the CIA continuing as sole owner until about 2018. With headquarters in Steinhausen, the company was a long-established manufacturer of encryption machines and a wide variety of cipher devices.

The company had about 230 employees, had offices in Abidjan, Abu Dhabi, Buenos Aires, Kuala Lumpur, Muscat, Selsdon and Steinhausen, and did business throughout the world. The owners of Crypto AG were unknown, supposedly even to the managers of the firm, and they held their ownership through bearer shares.

The company has been criticised for selling backdoored products to benefit the American, British and German national signals intelligence agencies, the National Security Agency (NSA), the Government Communications Headquarters (GCHQ), and the BND, respectively. On 11 February 2020, The Washington Post, ZDF and SRF revealed that Crypto AG was secretly owned by the CIA in a highly classified partnership with West German intelligence, and the spy agencies could easily break the codes used to send encrypted messages. The operation was known first by the code name "Thesaurus" and later "Rubicon".

Discussed on

πŸ”— Battle of Alesia

πŸ”— Military history πŸ”— Classical Greece and Rome πŸ”— Military history/French military history πŸ”— Military history/Roman and Byzantine military history πŸ”— Military history/Classical warfare πŸ”— Celts πŸ”— Military history/European military history

The Battle of Alesia or Siege of Alesia was a military engagement in the Gallic Wars that took place in September, 52Β BC, around the Gallic oppidum (fortified settlement) of Alesia, a major centre of the Mandubii tribe. It was fought by the army of Julius Caesar against a confederation of Gallic tribes united under the leadership of Vercingetorix of the Arverni. It was the last major engagement between Gauls and Romans, and is considered one of Caesar's greatest military achievements and a classic example of siege warfare and investment. The battle of Alesia marked the end of Gallic independence in France and Belgium.

The battle site was probably atop Mont Auxois, above modern Alise-Sainte-Reine in France, but this location, some have argued, does not fit Caesar's description of the battle. A number of alternatives have been proposed over time, among which only Chaux-des-Crotenay (in Jura in modern France) remains a challenger today.

At one point in the battle the Romans were outnumbered by the Gauls by four to one. The event is described by several contemporary authors, including Caesar himself in his Commentarii de Bello Gallico. After the Roman victory, Gaul (very roughly modern France) was subdued and became a Roman province. The Roman Senate granted a thanksgiving of 20 days for his victory in the Gallic War.

Discussed on

πŸ”— Millennium Challenge 2002 - military simulation

πŸ”— Military history πŸ”— Military history/North American military history πŸ”— Military history/United States military history

Millennium Challenge 2002 (MC02) was a major war game exercise conducted by the United States Armed Forces in mid-2002. The exercise, which ran from 24 July to 15 August and cost US$250 million (equivalent to about $355M in 2019), involved both live exercises and computer simulations. MC02 was meant to be a test of future military "transformation"β€”a transition toward new technologies that enable network-centric warfare and provide more effective command and control of current and future weaponry and tactics. The simulated combatants were the United States, referred to as "Blue", and a fictitious state in the Persian Gulf, "Red", often characterized as Iran or Iraq.

Discussed on

πŸ”— German submarine U-1206

πŸ”— Germany πŸ”— Military history πŸ”— Military history/Maritime warfare πŸ”— Military history/World War II πŸ”— Military history/German military history πŸ”— Military history/European military history

German submarine U-1206 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 12 June 1943 at F. Schichau GmbH in Danzig and went into service on 16 March 1944 before sinking a year later, in April 1945. The boat's emblem was a white stork on a black shield with green beak and legs.

Discussed on