- Army : Either the largest type of formation for a land-based military force, or the entirety of a nation's military force responsible for its land defenses.
- Lieutenant general : A senior military rank in ground or air forces, leading a corps-size organization, occupying a major staff leadership role, or, in some countries, commanding the entire military
- Marine Air-Ground Task Force : The basic structure of United States Marine Corps combined arms, task-organized units
- Multi-National Corps-Iraq : Highest land combat headquarters for Coalition tactical units in the peace operations phase of the Iraq War
- Eurocorps : A corps-sized European Union military force, which is normally part of NATO but can act independently of it
- I Corps tactical zone : The geographic command, under the Army of the Republic of Viet Nam, for the northernmost provinces of South Vietnam. It directly faced North Vietnam across the Demilitarized Zone, as well as having an important boundary with Laos.
- II Corps tactical zone : The geographical command of the Army of the Republic of Viet Nam that covered more land mass than any other region, in Central Vietnam including the Highlands. It roughly corresponded with the operational area of the U.S. II Field Force Vietnam.
- III Corps tactical zone : In the Army of the Republic of Viet Nam, the geographic command responsible for Saigon, the national capital, and its surrounding provinces. While relatively small in land mass, it had a large part of the population and the bulk of economy and industry.
- IV Corps tactical zone : The southernmost regional command of the Army of the Republic of Viet Nam, including the Mekong River Delta.
- I Corps : U.S. Army corps headquartered at Fort Lewis, Washington; designated principally as a command organization for Pacific contingencies; commanded by LTG Charles Jacoby Jr.
- III Corps : Usually called by its traditional name, III Armored Corps, one of the three active-duty U.S. Army contingency operations corps units, with headquarters at Fort Hood, Texas; commanded by LTG Bob Cone
- V Corps : A major tactical and operational command headquarters of the United States Army, normally forward-deployed in Heidelberg, Germany as part of United States European Command
- VI Corps : Add brief definition or description
- XVIII Airborne Corps : A corps headquarters of the United States Army, long reserved for highly mobile strategic reserve operations but now deployed when the corps level of command is needed; headed by LTG Frank Helmick
- Echelons above Corps : Add brief definition or description
- Echelons above corps : Military resources under the control of a headquarters above the level of the highest tactical organization (i.e., a corps), usually a theater or national level of command; the higher headquarters may delegate tactical control of them to subordinate units, or control them directly (e.g., reconnaissance satellites, elite special operations forces)
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- Air assault : Military operations in which infantry are carried by aircraft onto, or very near, the target, or by parachuting. The aircraft may be helicopters, tilt-rotor aircraft, short-landing transports, or, historically, gliders.
- Air defense artillery : A combat arms branch of the United States Army, responsible for defending ground forces and the continental United States against aircraft and missile attack
- Airborne Common Sensor : A manned U.S. Army battlefield signals intelligence and imaging radar aircraft, to use a business jet or turboprop airframe, which will replace the Airborne Reconnaissance Low and RC-12 GUARDRAIL aircraft, and complement unmanned aerial vehicle and other battlefield sensors.
- Airborne Reconnaissance Low : A multifunction U.S. Army intelligence collection aircraft, available in small numbers and to be replaced by the Airborne Common Sensor
- American Civil War : Major war 1861-65 fought over slavery in which the U.S. defeated the secessionist Confederate States of America.
- Army Battle Command System : The set of information systems and components that support the operational-level command and control of the U.S. Army, abbreviated ABCS
- Army of the Republic of Viet Nam : A term describing both the ground force specifically, and the armed forces generally, of South Vietnam during the Vietnam War and Fall of South Vietnam
- Eighth United States Army : Actually consisting of a reinforced division, this is the headquarters for U.S. Army forces in South Korea, but its four-star commander also commands United States Forces Korea and the United Nations Command
- Fall of South Vietnam : The result of a series of conventional military actions by the People's Army of Viet Nam, under the direction of the Politburo of the Democratic Republic of Vietnam, which led to the dissolution of the Republic of Vietnam and the reunification of North and South Vietnam into the Socialist Republic of Vietnam
- France : Western European republic (population c. 64.1 million; capital Paris) extending across Europe from the English Channel in the north-west to the Mediterranean in the south-east; bounded by Belgium, Luxembourg, Germany, Switzerland, Italy, Monaco, Andorra and Spain; founding member of the European Union. Colonial power in Southeast Asia until 1954.
- GRC-245 : A Canadian-developed, Enhanced High Capacity Line-of-Sight (HCLOS) radio, used in the U.S. Army Warfighter Information Network–Tactical and by a number of countries; it provides up to 34 Mbps of digital information transfer compatible with the Joint Tactical Radio System architecture
- General : In current military organizations, the highest military rank (although the naval equivalent is admiral); also used in the sense of general officer, the highest grade of ranks of which this is the highest
- Guadalcanal campaign : The first Allied offensive campaign of the Pacific theater in WWII, fought August 7, 1942 and February 9, 1943; Allied victory
- Gulf War : The conflict started by the Iraqi invasion of Kuwait in 1990, and ended with the liberation of Kuwait and major damage to Iraqi forces, by a US-led UN coalition in 1991.
- H Norman Schwarzkopf Jr. : Retired United States Army four-star general, best known for commanding United States Central Command and the coalition forces in the 1991 Gulf War
- Hamilton H. Howze : United States Army general and Army Aviation pioneer, considered the creator of division-sized, helicopter-mobile air assault forces. Retired as four-star commander of UN forces in Korea.
- Indochinese revolution : The period, within the Wars of Vietnam, 1858-1987, between which France reasserted its colonial authority over Indochina in 1945, created a proto-state of Vietnam under a provisional government during which there was increasing insurgency, fought conventionally combat with the Viet Minh starting in 1950, and ended in 1954. The end, militarily, involved the defeat of French forces at Dien Bien Phu and. politically, with the creation of North Vietnam and South Vietnam by the Geneva accords
- International Security Assistance Force : United Nations authorized, North Atlantic Treaty Organization-commanded military and security force in Afghanistan, in both a combat and training role
- Iraq War, major combat phase : That part of the Iraq War involving the initial invasion by large-scale ground forces
- Joint Network Node : A transportable communications routing and circuit-switching node, designed as a transition into the Warfighter Information Network-Tactical
- Joint warfare in South Vietnam 1964-1968 : The period of the Vietnam War in which large numbers of foreign ground troops, primarily but not exclusively U.S., allied with the Army of the Republic of Viet Nam against the People's Army of Viet Nam and the Viet Cong
- Luxembourg : Constitutional monarchy (Grand Duchy of Luxembourg; population c. 486,000; capital Luxembourg) surrounded by Belgium, France and Germany; founding member of the European Union.
- M2 Bradley (armored fighting vehicle) : A family of armored fighting vehicles, with roles including infantry fighting vehicle, scouting, forward observer, and other functions in a platform sufficiently survivable to accompany the M1 Abrams tank, although needing more protection
- MGM-140 ATACMS : A short- to medium-range ballistic missile, developed by the U.S. Army to engage high-value ground targets beyond the range of cannon, yet under the direct control of ground forces commanders; fired by the M270 Multiple Launch Rocket System
- Major general : A senior military rank, in the middle to bottom range the top of the "general officer " system that divides officers into junior, field, and general/flag.
- Operational art : A level of military power at which forces in the field, or deployed from the homeland, can determine the place and conditions of battle
- Paratroop : A subset of air assault military forces, which arrive at a tactical objective by deliberately parachuting from aircraft
- RC-12 GUARDRAIL : U.S. Army signals intelligence aircraft that are assigned to corps-level intelligence brigades, and fly in groups of three, transmitting data, without analysis, to a ground station
- Restructuring of the United States Army : A major doctrinal and organization redesign of the United States Army, with its chief feature being moving from the division to the Brigade Combat Team and new supporting brigade structures as the basic Unit of Action
- Saudi Arabia : A country in the Middle East, governed by a monarchy under Islamic law, which includes the most revered sites in Islam, and also dominates the world's oil economy.
- South Vietnam's ground war, 1972-1975 : That period during which South Vietnam fought North Vietnam without the assistance of U.S. ground troops
- Staff (military) : A military organization to extend the capabilities of a commander, by providing services from personal assistance to presenting alternative plans and managing the details of warfare
- Stanley Larsen : Lieutenant general of the U.S. Army, who commanded II Field Force of the Military Assistance Command, Vietnam, a corps-sized unit in the Central Highlands, during the buildup of U.S. ground forces in the Vietnam War. He later commanded the Sixth United States Army in the Presidio of San Francisco.