United States Army

The U.S. Army provides land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services. It is under the Department of the Army, which is one of the three military departments of the Department of Defense. The U.S. Army currently has 546,047 active personnel and 559,244 reserve and national guard personnel, which is a total combination of 1,105,301. It is headed by the Secretary of the Army, and the top military officer in the department is the Chief of Staff of the Army. The U.S. Army has engaged in the Northwest Indian War, Spanish-American War, Philippine-American War, Boxer Rebellion, Border War, World War I, Russian Civil War, World War II, Puerto Rican Nationalist Revolts, Korean War, 1958 Lebanon crisis, Operation Power Pack, Vietnam War, Operation Eagle Claw, Invasion of Grenada, Invasion of Panama, Persian Gulf War, Somali Civil War, Kosovo War, and many more operations. It was established on June 14, 1775.

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