The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution. The oldest and most senior branch of the U.S. military in order of precedence, the modern U.S. Army has its roots in the Continental Army, which was formed 14 June 1775 to fight the American Revolutionary War (1775–1783)—before the United States was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784 to replace the disbanded Continental Army. The United States Army considers itself to be a continuation of the Continental Army, and thus considers its institutional inception to be the origin of that armed force in 1775.
Fort Hamilton is a United States Army installation in the southwestern corner of the New York City borough of Brooklyn, surrounded by the communities of Bay Ridge and Dyker Heights. It is one of several posts that are part of the region which is headquartered by the Military District of Washington. Its mission is to provide the New York metropolitan area with military installation support for the Army National Guard and the United States Army Reserve. The original fort was completed in 1831, with major additions made in the 1870s and 1900s. However, all defenses except about half of the original fort have been demolished or buried.
The Rock Island Arsenal comprises 946 acres (383 ha), located on Arsenal Island, originally known as Rock Island, on the Mississippi River between the cities of Davenport, Iowa, and Rock Island, Illinois. It lies within the state of Illinois. Rock Island was previously used as the summer camp site for Sauk Native Americans, and the dispute over tribal ownership led to the Black Hawk War of 1832, after the primary leader of the Sauk, Black Hawk. It is now home of First Army headquarters, and the US Army's Center of Excellence for Additive Manufacturing. The island was originally established as a government site in 1816, with the building of Fort Armstrong. It is now the largest government-owned weapons manufacturing arsenal in the United States. It has manufactured military equipment and ordnance since the 1880s. In 1919–1920 one hundred of the Anglo-American or Liberty Mark VIII tanks were manufactured, although too late for World War I. It is designated as a National Historic Landmark.
Fort Huachuca is a United States Army installation, established on 3 March 1877 as Camp Huachuca. The garrison is now under the command of the United States Army Installation Management Command. It is in Cochise County, in southeast Arizona, approximately 15 miles (24 km) north of the border with Mexico and at the northern end of the Huachuca Mountains, adjacent to the town of Sierra Vista. From 1913 to 1933, the fort was the base for the "Buffalo Soldiers" of the 10th Cavalry Regiment. During the build-up of World War II, the fort had quarters for more than 25,000 male soldiers and hundreds of WACs. In the 2010 census, Fort Huachuca had a population of about 6,500 active duty soldiers, 7,400 military family members, and 5,000 civilian employees. Fort Huachuca has over 18,000 people on post during the peak working hours of 07:00 and 16:00 on weekdays.
The Military Auxiliary Radio System (MARS) is a United States Department of Defense sponsored program, established as a separately managed and operated program by the United States Army, and the United States Air Force. The United States Navy-Marine Corps program closed in 2015. The program is a civilian auxiliary consisting primarily of licensed amateur radio operators who are interested in assisting the military with communications on a regional and national level when access to traditional forms of communication may no longer be available. The MARS programs also include active duty, reserve, and National Guard units; and Navy, Marine Corps units.
Fort Belvoir is a United States Army installation and a census-designated place (CDP) in Fairfax County, Virginia, United States. It was developed on the site of the former Belvoir plantation, seat of the prominent Fairfax family for whom Fairfax County was named. It was known as Camp A. A. Humphreys from 1917 to 1935 and Fort Belvoir afterward.
The Air Defense Artillery Branch is the branch of the United States Army that specializes in anti-aircraft weapons. In the U.S. Army, these groups are composed of mainly air defense systems such as the Patriot Missile System, Terminal High Altitude Area Defense (THAAD), and the Avenger Air Defense system which fires the FIM-92 Stinger missile.
The Jefferson Barracks Military Post is located on the Mississippi River at Lemay, Missouri, south of St. Louis. It was an important and active U.S. Army installation from 1826 through 1946. It is the oldest operating U.S. military installation west of the Mississippi River, and it is now used as a base for the Army and Air National Guard. A Veterans Affairs healthcare system campus is located on the southern portion of the base and is also the headquarters for the Veterans Canteen Service.
The United States Army Center of Military History (CMH) is a directorate within the United States Army Training and Doctrine Command. The Institute of Heraldry remains within the Office of the Administrative Assistant to the Secretary of the Army. The center is responsible for the appropriate use of history and military records throughout the United States Army. Traditionally, this mission has meant recording the official history of the army in both peace and war, while advising the army staff on historical matters. CMH is the flagship organization leading the Army Historical Program.
The Massachusetts National Guard is the National Guard component for the Commonwealth of Massachusetts. Founded as the Massachusetts Bay Colonial Militia on December 13, 1636, it contains the oldest units in the United States Army. What is today's Massachusetts National Guard evolved through many different forms. Originally founded as a defensive militia for Puritan colonists in the Massachusetts Bay Colony, the militia evolved into a highly organized and armed fighting force. The Massachusetts militia served as a central organ of the New England revolutionary fighting force during the early American Revolution and a major component in the Continental Army under George Washington.
Camp Blanding Joint Training Center is the primary military reservation and training base for the Florida National Guard, both the Florida Army National Guard and certain nonflying activities of the Florida Air National Guard. The installation is located in Clay County, Florida, near the city of Starke. The site measures about 73,000 acres (30,000 ha) and includes Kingsley Lake. It also hosts other Reserve, Army National Guard, Air National Guard, and some Active Component training for the U.S. Armed Forces.
Camp Mabry is a military installation in Austin, Texas, that houses the headquarters of the Texas Military Department, Texas Military Forces, and Texas Military Forces Museum. Established in 1892, Camp Mabry is the third-oldest active military installation in Texas, behind Fort Sam Houston and Fort Bliss. It was named for Brigadier General Woodford H. Mabry, the Adjutant General of Texas when the camp was founded. The camp was added to the National Register of Historic Places in 1996.
The California Army National Guard is one of three components of the California National Guard, a reserve of the United States Army, and part of the National Guard of the United States. The California Army National Guard is composed of 18,450 soldiers. Nationwide, the Army National Guard comprises approximately one half of the US Army's available combat forces and approximately one third of its support organization. National coordination of various state National Guard units are maintained through the National Guard Bureau.
The United States Army Heritage and Education Center (USAHEC), at Carlisle Barracks, Pennsylvania, is the U.S. Army's primary historical research facility. Formed in 1999 and reorganized in 2013, the center consists of the Military History Institute (MHI), the Army Heritage Museum (AHM), the Historical Services Division (HSD), Visitor and Education Services (VES), the U.S. Army War College Library, and Collections Management (CM). The U.S. Army Heritage and Education Center is part of the United States Army War College, but has its own 56-acre (230,000 m2) campus.
Jackson Barracks is the headquarters of the Louisiana National Guard. It is located in the Lower 9th Ward of New Orleans, Louisiana. The base was established in 1834 and was originally known as New Orleans Barracks. On July 7, 1866, it was renamed in honor of Andrew Jackson. The National Register of Historic Places listed Jackson Barracks in 1976.
The National Guard Militia Museum of New Jersey is headquartered in Sea Girt, with a second museum located in Lawrenceville, New Jersey, and operates under the auspices of the New Jersey Department of Military and Veterans Affairs.
Camp Dodge is a military installation in the city of Johnston, Iowa. Centrally located near the capital of Iowa, it currently serves as the headquarters of the Iowa National Guard.
The history of the United States Army began in 1775. From its formation, the United States Army has been the primary land based part of the United States Armed Forces. The Army's main responsibility has been in fighting land battles and military occupation. The Corps of Engineers also has a major role in controlling rivers inside the ed States. The Continental Army was founded in response to a need for professional soldiers in the American Revolutionary War to fight the invading British Army. Until the 1940s, the Army was relatively small in peacetime. In 1947, the Air Force became completely independent of the Army Air Forces. The Army was under the control of the War Department until 1947, and since then the Defense Department. The U.S. Army fought the Indian Wars of the 1790s, the War of 1812 (1812–15), American Civil War (1861–65), Spanish–American War (1898), World War I (1917–18), World War II (1941–45), Korean War (1950–53) and Vietnam War (1965–71). Following the Cold War's end in 1991, Army has focused primarily on Western Asia, and also took part in the 1991 Gulf War and war in Iraq, and the war in Afghanistan.
Camp Withycombe, located in Clackamas County, Oregon, United States, was originally established as Camp Benson after Governor Frank W. Benson, but was later renamed Camp Withycombe during World War I for Governor James Withycombe.
The following list presents the ranks and insignia of the Armed Forces of the Philippines.
at Union Station 