美国陆军(United States Army)
美国军事组织中的主要军种，负责维护国家和平与安全。保卫国防。第一支正规的美国战斗部队－－大陆陆军－－在1775年由第二届大陆议会组成，以加强独立战争临近前的地方民兵部队。大陆陆军由五名文官组成的委员会领导，从此，美国军事力量就一直在文官统治之下。宪法规定武装力量由总统指挥，总统为武装力量的总司令。1789年成立文官组成的陆军部来管理武装力量。1783年正式撤销大陆陆军。陆军部作为国防部的军事部门，其领率机关为陆军部长办公室。陆军参谋部向陆军部提供建议和协助，并管理涉及非军方的事务，包括陆军工兵的民用工程计画。美国陆军也负责管理西点的美国陆军军官学校。
English version：
United States Army
Major branch of the U.S. military forces, charged with preserving peace and security and defending the nation. The first regular U.S. fighting force, the Continental Army, was organized by the Continental Congress on June 14, 1775, to supplement local militias in the American Revolution. It was placed under the control of a five-member civilian board, and U.S. military forces have remained in civilian control ever since. The U.S. Constitution named the president as commander in chief, and in 1789 the civilian Department of War was established to administer the armed forces. The Continental Army was officially disbanded in 1783, and a small regular army was established. Thereafter, the army's size increased during times of crisis, swelled by conscription, and decreased during peacetime. The Department of the Army is organized as a military section of the Department of Defense and is headed by the Secretary of the Army. The Army Staff gives advice and assistance to the secretary and administers civil functions, including the civil-works program of the Corps of Engineers. The army also administers the U.S. Military Academy at West Point. In 2000 there were about 400,000 soldiers on active duty.