|
Operation Purple Martin
Operation Purple Martin was a US Marine Corps operation that took place in northwest Quảng Trị Province, lasting from 1 March – 2 May 1969. Background Since early February 1969, U.S. reconnaissance detected that 3 People's Army of Vietnam (PAVN) Regiments, the 27th, 138th and 246th were moving south from the Vietnamese Demilitarized Zone (DMZ). The 4th Marine Regiment based at Vandegrift Combat Base was given the mission of forcing the 246th Regiment back into the DMZ, occupying key terrain along the southern boundary of the DMZ and then patrolling inside the southern half of the DMZ. Operation The operation began on 1 March 1969 with the 3rd Battalion, 4th Marines sweeping north of Firebase Russell, the 2nd Battalion, 4th Marines moving north of Firebase Neville and the 1st Battalion, 4th Marines clearing the area north of Elliot Combat Base. On 2 March 1969 as the 1/4 Marines moved to reopen Landing Zone Mack they were hit by PAVN mortar fire but seized the summit of Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam War
The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam. The north was supported by the Soviet Union, China, and other communist states, while the south was United States in the Vietnam War, supported by the United States and other anti-communism, anti-communist Free World Military Forces, allies. The war is widely considered to be a Cold War-era proxy war. It lasted almost 20 years, with direct U.S. involvement ending in 1973. The conflict also spilled over into neighboring states, exacerbating the Laotian Civil War and the Cambodian Civil War, which ended with all three countries becoming communist states by 1975. After the French 1954 Geneva Conference, military withdrawal from Indochina in 1954 – following their defeat in the First Indochina War – the Viet Minh to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1st Battalion, 4th Marines
1st Battalion, 4th Marines (1/4) is an infantry battalion in the United States Marine Corps based out of Marine Corps Base Camp Pendleton, California consisting of approximately 800 Marines and sailors. They fall under the command of the 1st Marine Regiment and the 1st Marine Division. Subordinate units * Headquarters and Service Company *A Company (Alpha Company) *B Company (Bravo Company) *C Company (Charlie Company) *D Company (Delta Company – not currently in use; company designation reserved for augmentation of a fourth rifle company into the battalion as needed) * Weapons Company History Formation The battalion was originally activated in April 1911 as the 1st Battalion, 4th Marine Regiment. The battalion first saw combat in November 1916 in the Dominican Republic, where 1st Lieutenant Ernest Williams was awarded the battalion's first Medal of Honor. The mission in the Dominican Republic was to protect foreign lives and property and to provide the "muscle" for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Marine Corps In The Vietnam War
United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two film Literature * ''United!'' (novel), a 1973 children's novel by Michael Hardcastle Music * United (band), Japanese thrash metal band formed in 1981 Albums * ''United'' (Commodores album), 1986 * ''United'' (Dream Evil album), 2006 * ''United'' (Marvin Gaye and Tammi Terrell album), 1967 * ''United'' (Marian Gold album), 1996 * ''United'' (Phoenix album), 2000 * ''United'' (Woody Shaw album), 1981 Songs * "United" (Judas Priest song), 1980 * "United" (Prince Ital Joe and Marky Mark song), 1994 * "United" (Robbie Williams song), 2000 * "United", a song by Danish duo Nik & Jay featuring Lisa Rowe Television * ''United'' (TV series), a 1990 BBC Two documentary series * ''United!'', a soap opera that aired on BBC One from 1965-19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battles And Operations Of The Vietnam War
A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force commitment. An engagement with only limited commitment between the forces and without decisive results is sometimes called a skirmish. The word "battle" can also be used infrequently to refer to an entire operational campaign, although this usage greatly diverges from its conventional or customary meaning. Generally, the word "battle" is used for such campaigns if referring to a protracted combat encounter in which either one or both of the combatants had the same methods, resources, and strategic objectives throughout the encounter. Some prominent examples of this would be the Battle of the Atlantic, Battle of Britain, and Battle of Stalingrad, all in World War II. Wars and military campaigns are guided by military strategy, whereas bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3rd Reconnaissance Battalion
The 3rd Reconnaissance Battalion (3rd Recon) conducts amphibious and ground reconnaissance in support of the 3rd Marine Division and Marine Forces Pacific (MarForPac), operating in the commander's areas of influence. The Battalion is based out of Camp Schwab, a satellite base of Marine Corps Base Camp Smedley D. Butler. It is geographically located on the Okinawa Prefecture in Japan. Mission and training Organization The 3rd Recon Battalion consists of approximately 450 Marines and Fleet Marine Force sailors that falls under the command of the 3rd Marine Division, III Marine Expeditionary Force. Company B was formed from the 5th Force Reconnaissance Company due to the formation of the Marine Special Operations Teams (MSOT) in 2006. 3rd Recon Battalion supports the 31st Marine Expeditionary Unit by augmenting a Reconnaissance and Surveillance (R&S) Platoon. Chronology *The 3rd Reconnaissance Company was activated on 16 September 1942 at Marine Corps Base Camp Pendleton, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell UH-1 Iroquois
The Bell UH-1 Iroquois (nicknamed "Huey") is a utility military helicopter designed and produced by the American aerospace company Bell Helicopter. It is the first member of the prolific Huey family, as well as the first turbine-powered helicopter in service with the United States military. Development of the Iroquois started in the early 1950s, a major impetus being a requirement issued by the United States Army for a new medical evacuation and utility helicopter. The Bell 204, first flown on 20 October 1956, was warmly received, particularly for the performance of its single turboshaft engine over piston engine-powered counterparts. An initial production contract for 100 ''HU-1A''s was issued in March 1960. In response to criticisms over the rotorcraft's power, Bell quickly developed multiple models furnished with more powerful engines; in comparison to the prototype's Lycoming YT53-L-1 (LTC1B-1) engine, producing 700 shp (520 kW), by 1966, the Lycoming T53-L-13, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firebase Argonne
Firebase Argonne (also known as Hill 1308) was a U.S. Marine Corps firebase located northwest of Khe Sanh, Quảng Trị Province in central Vietnam. History The base was built from 4–11 November 1968 by the 2nd Battalion 4th Marines approximately 10 km northwest of Khe Sanh and 2 km east of the Laotian border. The base provided excellent views of the People's Army of Vietnam (PAVN) transport network in Laos, but the Marines were unable to call fire missions due to U.S. Government policy. The base was abandoned by the Marines on 14 December 1968. PFC Robert H. Jenkins, Jr. part of a 12-man team from the 3rd Reconnaissance Battalion would be posthumously awarded the Medal of Honor for his actions at Argonne on 5 March 1969. On 20 March 1969 as part of Operation Purple Martin the Marines moved to reoccupy Firebase Argonne. As the Army UH-1E helicopter (#68-15340) carrying team "Frostburg" from the 3rd Reconnaissance Battalion approached the hill it was met with heavy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RPG-2
The RPG-2 (Russian: РПГ-2, Ручной противотанковый гранатомёт, ''Ruchnoy Protivotankovy Granatomyot''; English: "hand-held antitank grenade launcher") is a man-portable, shoulder-fired anti-tank weapon that was designed in the Soviet Union. It was the first successful anti-tank weapon of its type, being a successor to the earlier and unsuccessful RPG-1. The RPG-2 offered better range and armor penetration, making it useful against late and post-World War II tanks, in contrast to the RPG-1 that had only marginal utility. The basic design and layout was further upgraded to produce the ubiquitous RPG-7. History Studying German and US anti-tank rocket designs, in 1944 the Soviets began development of the RPG-1 with the goal of combining the best features of the German ''Panzerfaust'' single shot recoilless weapon with the US Bazooka rocket launcher. Propelled by a 30 mm cartridge, the high explosive anti-tank (HEAT) round could penetrate about of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMM-161
Marine Medium Tiltrotor Squadron 161 (VMM-161) is a United States Marine Corps tiltrotor squadron that operates the MV-22 Osprey. The squadron, known as the "Greyhawks", is based at Marine Corps Air Station Miramar, California and falls under the command of Marine Aircraft Group 16 (MAG-16) and the 3rd Marine Aircraft Wing (3rd MAW). The squadron has the distinction of being the first helicopter transport squadron in the world and regularly utilizes the phrase “The First, The Best”.Kristy, "Museum Preserves 60 Years of Marine Corps Rotary Wing Aviation", ''Fortitudine'', 2007. Mission: Provide assault support transport of combat troops, supplies and equipment during expeditionary, joint or combined operations. Be prepared for short-notice, worldwide employment in support of Marine Air-Ground Task Force operations. History Korean War & the early 1960s The squadron was commissioned on January 15, 1951 at Marine Corps Air Station El Toro, California, as Marine Helicopter Trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing Vertol CH-46 Sea Knight
The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem-rotor transport helicopter powered by twin turboshaft engines. It was designed by Vertol and manufactured by Boeing Vertol following Vertol's acquisition by Boeing. Development of the Sea Knight, which was originally designated by the firm as the Vertol Model 107, commenced during 1956. It was envisioned as a successor to the first generation of rotorcraft, such as the H-21 "Flying Banana", that had been powered by piston engines; in its place, the V-107 made use of the emergent turboshaft engine. On 22 April 1958, the V-107 prototype performed its maiden flight. During June 1958, the US Army awarded a contract for the construction of ten production-standard aircraft, designated as the YHC-1A, based on the V-107; this initial order was later cut down to three YHC-1As though. During 1961, the US Marine Corps (USMC), which had been studying its requirements for a medium-lift, twin-turbine cargo/troop assault helicopter, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Zone Sierra
Landing Zone Sierra was a U.S. Marine Corps base located northwest of Cam Lộ, Quảng Trị Province in central Vietnam. History The base was located on Mutter's Ridge north of The Rockpile, approximately 16 km northwest of Cam Lo. On 15 November 1968, a 1st Battalion 3rd Marines patrol near Sierra was ambushed by a People's Army of Vietnam (PAVN) force resulting in 7 Marines killed. On 2 March 1969 the 1st Battalion 4th Marines began Operation Purple Martin north of the Rockpile to engage the PAVN 246th Regiment which was believed to be located in the area. After retaking Landing Zone Mack Landing Zone Mack (also known as Hill 484) was a U.S. Marine Corps base located northwest of Cam Lộ, Quảng Trị Province in central Vietnam. History The base was located on Mutter's Ridge north of The Rockpile, approximately 16 km nort ..., on 13 March the Marines moved along the ridgeline to retake Landing Zone Sierra which had been abandoned two months earlier and was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cam Lộ District
Calmodulin (CaM) (an abbreviation for calcium-modulated protein) is a multifunctional intermediate calcium-binding messenger protein expressed in all eukaryotic cells. It is an intracellular target of the secondary messenger Ca2+, and the binding of Ca2+ is required for the activation of calmodulin. Once bound to Ca2+, calmodulin acts as part of a calcium signal transduction pathway by modifying its interactions with various target proteins such as kinases or phosphatases. Structure Calmodulin is a small, highly conserved protein that is 148 amino acids long (16.7 kDa). The protein has two approximately symmetrical globular domains (the N- and C- domains) each containing a pair of EF hand motifs separated by a flexible linker region for a total of four Ca2+ binding sites, two in each globular domain. In the Ca2+-free state, the helices that form the four EF-hands are collapsed in a compact orientation, and the central linker is disordered; in the Ca2+-saturated state, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
