Marius Vassiliou (born 1957) is an American computational scientist , geophysicist , and aerospace executive. He is also an authority on the history of petroleum . Vassiliou is of Greek Cypriot descent and was educated at Harvard University and the California Institute of Technology (PhD).
65-404: Command and control (abbr. C2 ) is a "set of organizational and technical attributes and processes ... [that] employs human, physical, and information resources to solve problems and accomplish missions" to achieve the goals of an organization or enterprise, according to a 2015 definition by military scientists Marius Vassiliou , David S. Alberts , and Jonathan R. Agre . The term often refers to
130-417: A commanding officer and subordinate military units . The purpose of a military staff is mainly that of providing accurate, timely information which by category represents information on which command decisions are based. The key application is that of decisions that effectively manage unit resources. While information flow toward the commander is a priority, information that is useful or contingent in nature
195-475: A military system. Versions of the United States Army Field Manual 3-0 circulated circa 1999 define C2 in a military organization as the exercise of authority and direction by a properly designated commanding officer over assigned and attached forces in the accomplishment of a mission . A 1988 NATO definition is that command and control is the exercise of authority and direction by
260-505: A properly designated commander over assigned and attached forces in the accomplishment of the mission. Also called C2. Source: JP 1". The edition of the Dictionary "As Amended Through April 2010" elaborates, "Command and control functions are performed through an arrangement of personnel, equipment, communications, facilities, and procedures employed by a commander in planning, directing, coordinating, and controlling forces and operations in
325-427: A properly designated individual over assigned resources in the accomplishment of a common goal. An Australian Defence Force definition, similar to that of NATO, emphasises that C2 is the system empowering designated personnel to exercise lawful authority and direction over assigned forces for the accomplishment of missions and tasks. The Australian doctrine goes on to state: "The use of agreed terminology and definitions
390-658: A single organization. The mission of Army Aviation is to find, fix and destroy any enemy through fire and maneuver and to provide combat support and combat service support in coordinated operations as an integral member of the combined arms team. Major aircraft include the AH-64 Apache , which serves as the Army's attack helicopter, the UH-60 Black Hawk , and the CH-47 Chinook for troop and cargo transport. Army Aviation also flies
455-453: A special operations force, Army Rangers are generally better equipped than standard infantry, utilizing the FN SCAR rifle. Army Special Forces , commonly known as Green Berets after their iconic headgear, are among the most elite soldiers in the Army. Special Forces conduct: Army Special Forces are trained in military free-fall parachuting and combat diver skillsets. They are considered
520-419: Is a plethora of derivative terms that emphasize various aspects, uses, and sub-domains of C2. These terms are accompanied by numerous associated abbreviations. For example, in addition to C2, command and control is often abbreviated as C2 and sometimes as C&C "Command and control" have been coupled with: and others. Some of the more common variations include: and others. A command and control center
585-560: Is assigned a role and domain. The Army conducts land operations. The Navy and Marine Corps conduct maritime operations, the Marine Corps specializing in amphibious and maritime littoral operations primarily for supporting the Navy. The Air Force conducts air operations. The Space Force conducts space operations. The Coast Guard is unique in that it specializes in maritime operations and is also a law enforcement agency. From their inception during
650-526: Is best known for his explanations of the depth distribution of earthquakes, and for his direct (non-Magnitude-based) calculations of earthquake energy release. Vassiliou has also been cited for his experimental work on solids at high pressures and temperatures. In 2009 he published the Historical Dictionary of the Petroleum Industry , which went into a Second Edition in 2018. In
715-586: Is communicated to lower staffs and units. This term is also in common use within the computer security industry and in the context of cyberwarfare . Here the term refers to the influence an attacker has over a compromised computer system that they control. For example, a valid usage of the term is to say that attackers use "command and control infrastructure" to issue "command and control instructions" to their victims. Advanced analysis of command and control methodologies can be used to identify attackers, associate attacks, and disrupt ongoing malicious activity. There
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#1733085933883780-408: Is fundamental to any C2 system and the development of joint doctrine and procedures . The definitions in the following paragraphs have some agreement internationally, although not every potential ally will use the terms with exactly the same meaning." The US Department of Defense Dictionary of Military and Associated Terms defines command and control as: "The exercise of authority and direction by
845-544: Is led by the chairman of the Joint Chiefs of Staff , who is the military head of the armed forces and principal advisor to the president and secretary of defense on military matters. Their deputy is the vice chairman of the Joint Chiefs of Staff . Other members include the chief of staff of the Army , commandant of the Marine Corps , chief of naval operations , chief of staff of the Air Force , chief of space operations , and
910-565: Is now one of the eight uniformed services of the United States. Should it be called into active duty again, it would constitute a seventh branch of the Armed Forces. The United States Space Force was established as an independent service on 20 December 2019. It is the sixth branch of the U.S. military and the first new branch in 72 years. The origin of the Space Force can be traced back to
975-513: Is the world's 12th-largest maritime force. The history of the U.S. Armed Forces dates back to 14 June 1775, with the creation of the Continental Army , even before the Declaration of Independence marked the establishment of the United States. The Continental Navy , established on 13 October 1775, and Continental Marines , established on 10 November 1775, were created in close succession by
1040-612: Is typically a secure room or building in a government, military or prison facility that operates as the agency's dispatch center, surveillance monitoring center, coordination office and alarm monitoring center all in one. Command and control centers are operated by a government or municipal agency. Various branches of the US military such as the US Coast Guard and Navy have command and control centers. They are also common in many large correctional facilities. A command and control center that
1105-538: Is unique in that it is a military branch specializing in maritime operations and also a law enforcement agency. The United States Army (USA) is the United States Armed Forces' land force and is the largest and oldest service. Originally established in 1775 as the Continental Army , it consists of one million soldiers across the Regular Army, Army Reserve , and Army National Guard . The Army serves as
1170-468: Is used by a military unit in a deployed location is usually called a "command post". A warship has a combat information center for tactical control of the ship's resources, but commanding a fleet or joint operation requires additional space for commanders and staff plus C4I facilities provided on a flagship (e.g., aircraft carriers), sometimes a command ship or upgraded logistics ship such as USS Coronado . Command and control warfare encompasses all
1235-700: The 10th Mountain Division , 11th Airborne Division , 25th Infantry Division , 82nd Airborne Division , 101st Airborne Division , and 173rd Airborne Brigade have a cavalry squadron equipped with the Joint Light Tactical Vehicle . The Field Artillery's mission is to destroy, suppress or neutralize the enemy by cannon, rocket or missile fire. Rocket systems include the M142 HIMARS and M270 multiple launch rocket system , which are corps-level assets found in field artillery brigades. Towed artillery includes
1300-523: The 11th Airborne Division , 82nd Airborne Division , and 173rd Airborne Brigade are capable of airborne operations, in cooperation with the U.S. Air Force's transport aircraft. Finally, Infantry Brigade Combat Teams assigned to the 10th Mountain Division specialize in mountain warfare . Standard Infantry Brigade Combat Teams are assigned to the 25th Infantry Division , which offers additional training in jungle warfare . Armored Brigade Combat Teams comprise mechanized infantry battalions mounted in
1365-400: The 4th Infantry Division . Each Armored Brigade Combat Team also possesses a cavalry squadron equipped with M2 Bradleys for scouting and security. Stryker Brigade Combat Teams from the 2nd Infantry Division , 4th Infantry Division , 11th Airborne Division , 2nd Cavalry Regiment , and 3rd Cavalry Regiment have a cavalry squadron equipped with Strykers . Infantry Brigade Combat Teams from
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#17330859338831430-507: The 75th Ranger Regiment are an elite special operations infantry force in the United States Army Special Operations Command , specializing in air assault and airborne infiltration methods. The three primary missions of the 75th Ranger Regiment are special operations raids , forcible entry operations, such as an airfield seizure to enable the Air Force to bring in more forces, and special reconnaissance . As
1495-713: The Air Force Space Command , which was formed 1 September 1982 and was a major command of the United States Air Force. The U.S. Congressional Research Office annually publishes a List of Notable Deployments of U.S. Military Forces Overseas since 1798. Presidential command over the U.S. Armed Forces is established in Article II in the Constitution whereby the president is named as the " Commander in Chief of
1560-527: The American Revolutionary War , the U.S. Armed Forces have played a decisive role in the country's history . They helped forge a sense of national unity and identity through victories in the early-19th-century First and Second Barbary Wars . They played a critical role in the territorial evolution of the U.S. , including the American Civil War . The National Security Act of 1947 created
1625-532: The Department of the Navy , which is a military department under the leadership of the secretary of the Navy and the under secretary of the Navy . The U.S. Marine Corps itself is led by the commandant of the Marine Corps and the assistant commandant of the Marine Corps , both generals who are advised by the sergeant major of the Marine Corps . The Marine Corps statutory mission is outlined in 10 U.S.C. ยง 5063 and as originally introduced under
1690-683: The FIM-92 Stinger man-portable air-defense system , AN/TWQ-1 Avenger for short range air defense , and the counter rocket, artillery, and mortar 20mm gun system. The Iron Dome provides air defense against rockets, artillery, mortars, missiles, and unmanned aerial vehicles. The MIM-104 Patriot is capable of defeating a wide range of threats including aircraft, helicopters, UAVs, ballistic and cruise missiles, and Weapons of Mass Destruction. The Terminal High Altitude Area Defense protects strategic critical assets by conducting long-range endo-and-exo-atmospheric engagements of ballistic missiles using
1755-600: The M119 howitzer in infantry brigade combat teams and the M777 howitzer found in both infantry and Stryker brigade combat teams. The M109 self-propelled howitzer is utilized in armored brigade combat teams. During the Cold War, Army field artillery was responsible for the service's ballistic missile programs, including the PGM-11 Redstone , which was the first large ballistic missile in
1820-660: The M2 Bradley infantry fighting vehicle . Divisions with Armored Brigade Combat Teams include the 1st Infantry Division , 3rd Infantry Division , 4th Infantry Division , 1st Armored Division , and 1st Cavalry Division . Stryker Brigade Combat Teams are centered around Stryker infantry battalions operating out of the Stryker . Divisions with Stryker Brigade Combat Teams include the 2nd Infantry Division , 4th Infantry Division , 11th Airborne Division , 2nd Cavalry Regiment , and 3rd Cavalry Regiment . United States Army Rangers with
1885-681: The MQ-1C Gray Eagle drone. A specialized unit within Army Aviation, the 160th Special Operations Aviation Regiment (Airborne) serves as a special operations unit and operates modified variants of the MH-60 Black Hawk, MH-47 Chinook, and the MH-6 Little Bird . The U.S. Army is organized into four major Army Commands, nine Army Service Component Commands which serve as the Army component and joint force land component commanders for
1950-519: The Marine Corps Reserve . The Marine Corps maintains a very close relationship with the U.S. Navy, its sister service in the Department of the Navy. Although the Marine Corps has previously operated as an independent land force alongside the Army, its primary purpose is to serve as part of a unified naval service alongside the Navy in the maritime domain. The U.S. Marine Corps is organized under
2015-701: The Second Continental Congress in order to defend the new nation against the British Empire in the American Revolutionary War . These forces demobilized in 1784 after the Treaty of Paris ended the Revolutionary War. The Congress of the Confederation created the current United States Army on 3 June 1784. The United States Congress created the current United States Navy on 27 March 1794 and
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2080-539: The chief of the National Guard Bureau . The commandant of the Coast Guard is not an official member of the Joint Chiefs, but sometimes attends meetings as one of the military service chiefs. The senior enlisted advisor to the chairman is the most senior enlisted member in the United States Armed Forces. Leadership of the Armed Forces, to include the president of the United States, the secretary of defense ,
2145-523: The deputy secretary of defense , deputy secretary of homeland security , and vice chairman of the Joint Chiefs of Staff . Military leadership, including the secretary of defense, the secretary of Homeland Security, and chairman of the Joint Chiefs of Staff also sit on the National Space Council . Unified combatant commands are joint military commands consisting of forces from multiple military departments, with their chain of command flowing from
2210-603: The joint force land component , Navy components are typically dual-hatted as the joint force maritime component , and Air Force components are typically dual-hatted as the joint force air component , with the theater special operations command dual-hatted as the joint force special operations component, and Space Force component typically dual-hatted as the joint force space component. Combat support agencies are Department of Defense agencies with combat support missions that service operating forces planning or conducting military operations. This includes support during conflict or in
2275-591: The military forces of the United States . The armed forces consist of six service branches : the Army , Marine Corps , Navy , Air Force , Space Force , and Coast Guard . All six armed services are among the eight uniformed services of the United States , along with the U.S. Public Health Service Commissioned Corps and the NOAA Commissioned Officer Corps . Each of the different military services
2340-543: The secretary of Homeland Security and chairman of the Joint Chiefs of Staff are members of the United States National Security Council , which advises the president on national security, military, and foreign policy matters. The national security advisor , the homeland security advisor , and the deputy national security advisor may also be members of the United States Armed Forces. The National Security Council Deputies Committee also includes
2405-410: The sergeant major of the Army . The Army's primary responsibility is to conduct prompt and sustained land combat as part of the joint force. Army landpower focuses on destroying an enemy's armed forces, occupying its territory, and breaking the will of an adversary. The five core competencies of the Army are: The thirteen specified functions of the Army are: The Infantry Branch forms the core of
2470-523: The unified combatant commands , and thirteen direct reporting units. The United States Marine Corps (USMC) serves as the U.S. Armed Forces' naval land force, responsible for executing amphibious warfare and operating in the maritime littorals in support of the U.S. Navy. Originally established in 1775 as the Continental Marines , the Marine Corps consists of the Regular Marine Corps and
2535-486: The Air Force through its Air and Missile Defense Commands and the Space Force through Army Space and Missile Defense Command, given their shared missile defense and space roles. In 1962, Air Defense Artillery achieved the first intercept of a ballistic missile with a nuclear-tipped Nike Zeus and operated the Nike Zeus as an anti-satellite weapon after completing a successful intercept in 1963. Army Aviation, distinct from
2600-416: The Armed Forces principal land service, responsible for conducting land warfare operations. The U.S. Army is organized under the Department of the Army , which is a military department under the leadership of the secretary of the Army and under secretary of the Army . The U.S. Army itself is led by the chief of staff of the Army and vice chief of staff of the Army , both generals who are advised by
2665-577: The Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States." The United States Armed Forces are split between two cabinet departments, with the Department of Defense serving as the primary cabinet department for military affairs and the Department of Homeland Security responsible for administering the United States Coast Guard . The military chain of command flows from
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2730-624: The Department of Defense's military departments. The United States Coast Guard is nominally under the Department of Homeland Security , but may be transferred to the Department of Defense's Department of the Navy (which is the civilian entity that oversees the coequal U.S. Marine Corps and U.S. Navy) at the direction of the President or Congress. With the exception of the Coast Guard, the military services only organize, train, and equip forces. The unified combatant commands are responsible for operational control of non-service retained forces. Each of
2795-622: The Future of the Enterprise , which has also been translated into Chinese. In 2022 Vassiliou, along with professor Mir-Yusif Mir-Babayev, published the book US and Azerbaijani Oil in the Nineteenth Century: The Two Titans , which covers the early period of the petrochemical age, when the United States and Azerbaijan were responsible for 97% of the world's oil production. US military The United States Armed Forces are
2860-504: The President of the United States to the secretary of defense (for services under the Defense Department) or secretary of homeland security (for services under the Department of Homeland Security), ensuring civilian control of the military . Within the Department of Defense, the military departments ( Department of the Army , United States Department of the Navy , and Department of the Air Force ) are civilian led entities that oversee
2925-482: The U.S. Air Force and its predecessors, began as part of the field artillery in 1942. Small spotter planes were used to spot for artillery and naval bombardment, as well as to perform observation. These few aircraft formed the core of Army Aviation once the U.S. Air Force gained independence. In 1983, the Army created the Aviation Branch, for the first time since the Air Force's independence consolidating aviation under
2990-708: The U.S. arsenal, the MGM-31 Pershing , and the Pershing II . In 2023, the Army is intending to field the Long-Range Hypersonic Weapon and has reestablished larger artillery formations like the 56th Artillery Command . The Air Defense Artillery is responsible for defending geopolitical assets and providing maneuver forces with the freedom to move on the battlefield by deterring the enemy and destroying aerial threats, missile attacks, and surveillance platforms. Weapons employed by Air Defense Artillery include
3055-560: The United States is the United States Armed Forces' commander-in-chief . The United States Coast Guard traces its origin to the formation of the Revenue Cutter Service on 4 August 1790, which merged with the United States Life-Saving Service on 28 January 1915 to establish the Coast Guard. The United States Air Force was established as an independent service on 18 September 1947; it traces its origin to
3120-406: The accomplishment of the mission." However, this sentence is missing from the "command and control" entry for the edition "As Amended Through 15 August 2014." Commanding officers are assisted in executing these tasks by specialized staff officers and enlisted personnel. These military staff are a group of officers and enlisted personnel that provides a bi-directional flow of information between
3185-528: The armed forces and forms military policy with the DoD and Department of Homeland Security (DHS), both federal executive departments , acting as the principal organs by which military policy is carried out. The U.S. Armed Forces are one of the world's largest military forces in terms of personnel. They draw their personnel from a large pool of professional volunteers . The U.S. has used military conscription , but not since 1973. The Selective Service System retains
3250-487: The broader field of computational physics , Vassiliou is known for the introduction of Rokhlin's fast multipole method to computational electromagnetics . As an executive at the Rockwell International Corporation he was also well known as the leader of the U. S. Army Research Laboratory 's Advanced Displays Federated Laboratory Consortium in the late 1990s and early 2000s, making advances in
3315-410: The coequal military service branches organized within each department. The military departments and services are responsible for organizing, training, and equipping forces, with the actual chain of command flowing through the unified combatant commands . The Joint Chiefs of Staff , although outside the operational chain of command, is the senior-most military body in the United States Armed Forces. It
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#17330859338833380-662: The conduct of other military activities related to countering threats to U.S. national security. This mission is focused on providing support to echelons at the CCMD level and below and may not encompass the full scope of the CSA's mission. The United States Armed Forces is composed of six coequal military service branches. Five of the branches, the United States Army , United States Marine Corps , United States Navy , United States Air Force , and United States Space Force , are organized under
3445-469: The current United States Marine Corps on 11 July 1798. All three services trace their origins to their respective Continental predecessors. The 1787 adoption of the Constitution gave Congress the power to "raise and support armies," to "provide and maintain a navy", and to "make rules for the government and regulation of the land and naval forces", as well as the power to declare war . The President of
3510-401: The different military services is assigned a role and domain. The U.S. Army conducts land operations, while the U.S. Navy and U.S. Marine Corps conduct maritime operations, with the Marine Corps specializing in amphibious and maritime littoral operations in support of the Navy. The U.S. Air Force conducts air operations, while the U.S. Space Force conducts space operations. The U.S. Coast Guard
3575-428: The enemy and so disrupt its command and control capabilities. At the same time precautions are taken to protect friendly command and control capabilities against retaliation. In addition to targeting the enemy's command and control, information warfare can be directed to the enemy's politicians and other civilian communications. US and other NATO specific: Other Marius Vassiliou In geophysics , he
3640-453: The force around the world, including around 800 military bases outside the U.S. The U.S. Air Force is the world's largest air force, followed by the U.S. Army Aviation Branch . The U.S. Naval Air Forces is the fourth-largest air arm in the world and is the largest naval aviation service, while U.S. Marine Corps Aviation is the world's seventh-largest air arm. The U.S. Navy is the world's largest navy by tonnage . The U.S. Coast Guard
3705-584: The formation of the Aeronautical Division, U.S. Signal Corps , which was formed 1 August 1907 and was part of the Army Air Forces before being recognized as an independent service in the National Security Act of 1947. The United States Public Health Service Commissioned Corps was formerly considered to be a branch of the United States Armed Forces from 29 July 1945 until 3 July 1952, and
3770-410: The interaction of humans with displays. The work in augmented reality included early development of the types of technologies that would later be applied to such platforms as google glass . In later years, as an analyst advising the U.S. Government, he wrote influential papers on Command, Control, and Communications, including some with David Alberts , and published the book C2 Re-envisioned:
3835-425: The military tactics that use communications technology. It can be abbreviated as CW. An older name for these tactics is "signals warfare", derived from the name given to communications by the military. Newer names include information operations and information warfare . The following techniques are combined: with the physical destruction of enemy communications facilities. The objective is to deny information to
3900-488: The modern U.S. military framework, establishing the National Military Establishment (later the Department of Defense or DoD) headed by the secretary of defense and creating both the U.S. Air Force and National Security Council ; in 1949, an amendment to the act merged the cabinet-level departments of the Army, Navy, and Air Force into the DoD. The president of the U.S. is the commander-in-chief of
3965-663: The most versatile special operations force in the entire world, operating as a multi-purpose force since 1952. The Armor Branch traces its history back to the United States Cavalry and are responsible for tank and cavalry reconnaissance operations. The U.S. Army fields the M1 Abrams main battle tank in Armored Battalions as part of Armored Brigade Combat Teams across the 1st Armored Division , 1st Cavalry Division , 1st Infantry Division , 3rd Infantry Division , and
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#17330859338834030-664: The power to conscript males, requiring the registration of all male citizens and residents of the U.S. between the ages of 18 and 25. The U.S. Armed Forces are considered the world's most powerful military, especially since the end of the Cold War . The military expenditure of the U.S. was US$ 916 billion in 2023, the highest in the world, accounting for 37% of the world's defense expenditures . The U.S. Armed Forces has significant capabilities in both defense and power projection due to its large budget, resulting in advanced and powerful technologies which enable widespread deployment of
4095-438: The president, to the secretary of defense, to the commanders of the combatant commands. Each service organizes, trains, and equips forces that are then presented to the unified combatant commands through service component commands. Special Operations Command and Cyber Command also present theater special operations commands or joint force headquarters โ cyber to other combatant commanders. Army components are typically dual-hatted as
4160-762: The service's land combat power. U.S. Army infantry are generally equipped with the M4 carbine and M249 light machine gun , which will be replaced by the XM7 rifle and XM250 . Infantry is a core part of the Army's Brigade Combat Teams . The most numerous variant, the Infantry Brigade Combat Team, comprises light infantry battalions who fight on foot. Infantry Brigade Combat Teams of the 82nd Airborne Division are air assault capable, with infantry soldiers being transported by U.S. Army Aviation UH-60 Black Hawk and CH-47 Chinook helicopters. Infantry Brigade Combat Teams of
4225-506: The world's largest air-transportable X-band radar. The Ground-Based Midcourse Defense is an anti-ballistic missile system operated by Army Space and Missile Defense Command to defend the United States homeland against an intercontinental ballistic missile attack. Major Air Defense Artillery units include the 32nd Army Air and Missile Defense Command and Army Space and Missile Defense Command's 100th Missile Defense Brigade . Air Defense Artillery has an extremely close relationship with
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