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  2. United States Army - Wikipedia

    en.wikipedia.org/wiki/United_States_Army

    United States. 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. [14] The Army is the oldest branch of the U.S. military and the most senior in order of precedence. [15]

  3. Posse Comitatus Act - Wikipedia

    en.wikipedia.org/wiki/Posse_Comitatus_Act

    The Posse Comitatus Act is a United States federal law ( 18 U.S.C. ยง 1385, original at 20 Stat. 152) signed on June 18, 1878, by President Rutherford B. Hayes which limits the powers of the federal government in the use of federal military personnel to enforce domestic policies within the United States. Congress passed the Act as an amendment ...

  4. Structure of the United States Army - Wikipedia

    en.wikipedia.org/wiki/Structure_of_the_United...

    The Chemical Warfare Service was established on 28 June 1918, combining activities that until then had been dispersed among five separate agencies of government. It was made a permanent branch of the Regular Army by the National Defense Act of 1920. In 1945, it was re-designated the Chemical Corps. Military Police Corps, 26 September 1941

  5. OODA loop - Wikipedia

    en.wikipedia.org/wiki/OODA_loop

    Diagram of the OODA loop. The OODA loop (observe, orient, decide, act) is a decision-making model developed by military strategist and United States Air Force Colonel John Boyd. He applied the concept to the combat operations process, often at the operational level during military campaigns. It is often applied to understand commercial ...

  6. United States Secretary of the Army - Wikipedia

    en.wikipedia.org/wiki/United_States_Secretary_of...

    The secretary of the Army ( SA or SECARMY) is a senior civilian official within the United States Department of Defense, with statutory responsibility for all matters relating to the United States Army: manpower, personnel, reserve affairs, installations, environmental issues, weapons systems and equipment acquisition, communications and ...

  7. History of the United States Army - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    The history of the United States Army began in 1775, as 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 United States. The Continental Army was founded in response to a need for ...

  8. Army Act - Wikipedia

    en.wikipedia.org/wiki/Army_Act

    Army Act. An Act to consolidate the Army Discipline and Regulation Act, 1879, and the subsequent Acts amending the Same. Until 1689, mutiny was regulated in England by Articles of War instituted by the monarch and effective only in a period of war. This abuse of the crown's prerogative (the crown's right to make and enforce rules for the ...

  9. Enrollment Act - Wikipedia

    en.wikipedia.org/wiki/Enrollment_Act

    The Enrollment Act of 1863 (12 Stat. 731, enacted March 3, 1863) also known as the Civil War Military Draft Act, [1] was an Act passed by the United States Congress during the American Civil War to provide fresh manpower for the Union Army. The Act was the first genuine national conscription law. The law required the enrollment of every male ...