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  2. United States Armed Forces - Wikipedia

    en.wikipedia.org/wiki/United_States_armed_forces

    The United States Space Force (USSF) is the United States Armed Forces' space force and is the newest military branch. Originally established in 2019, it traces its history through Air Force Space Command and the Western Development Division to 1954. The United States Space Force is the principal space service, responsible for space warfare ...

  3. Military history of the United States - Wikipedia

    en.wikipedia.org/wiki/Military_history_of_the...

    The United States was a minor military power during this time, having only a modest army, marine corps, and navy. A traditional distrust of standing armies, combined with faith in the abilities of local militia, precluded the development of well-trained units and a professional officer corps .

  4. Energy usage of the United States military - Wikipedia

    en.wikipedia.org/wiki/Energy_usage_of_the_United...

    Air Force. The Air Force is the largest user of fuel energy in the federal government. The Air Force uses 10% of the nation's aviation fuel. (JP-8 accounts for nearly 90% of its fuels.) This fuel usage breaks down as such: 82% jet fuel, 16% facility management and 2% ground vehicle/equipment. [4] To meet renewable energy goals, the Air Force ...

  5. 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. [ 15 ] The Army is the oldest branch of the U.S. military and the most senior in order of precedence. [ 16 ]

  6. United States Navy - Wikipedia

    en.wikipedia.org/wiki/United_States_Navy

    The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the world's most powerful navy and the largest by tonnage, at 4.5 million tons in 2021 [9] and in 2009 an estimated battle fleet tonnage that exceeded the next 13 navies combined. [10]

  7. Organizational structure of the United States Department of ...

    en.wikipedia.org/wiki/Organizational_structure...

    The President of the United States is, according to the Constitution, the Commander-in-Chief of the U.S. Armed Forces and Chief Executive of the Federal Government. The Secretary of Defense is the "Principal Assistant to the President in all matters relating to the Department of Defense", and is vested with statutory authority (10 U.S.C. § 113) to lead the Department and all of its component ...

  8. United States Secretary of Defense - Wikipedia

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

    The United States secretary of defense (SecDef) is the head of the United States Department of Defense, the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. [5][6][7] The secretary of defense's position of command and authority over the military is second only to that of the president of the ...

  9. List of components of the U.S. Department of Defense

    en.wikipedia.org/wiki/List_of_components_of_the...

    The chain of command leads from the president (as commander-in-chief) through the secretary of defense down to the newest recruits. [2] [3] The United States Armed Forces are organized through the United States Department of Defense, which oversees a complex structure of joint command and control functions with many units reporting to various commanding officers.