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In 2012, the U.S. Army had just concluded one major conflict the previous year (Iraq), remained engaged in another conflict (Afghanistan), and still maintained a significant presence on the Korean peninsula. The Army’s active-duty strength was approximately 550,000, which was organized into three field armies (Third, Seventh, and Eighth), four corps (I, III, V, and XVIII Airborne), and 10 divisions (1st Armored, 1st Cavalry, 1st–4th and 25th Infantry, 10th Mountain, and 82nd and 101st Airborne). Numerous separate brigades, groups, regiments, and even separate battalions also existed in the combat, support, and service branches. A small number of U.S. Army forces were also permanently attached to the U.S. Special Operations Command, a joint organization that controlled the most important elite units within all of the services, ...

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