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Korean Augmentation to the U.S. Army reserve Soldiers conduct basic rifle marksmanship training on a simulator on U.S. Army Garrison Humphreys, South Korea, Oct. 25, 2023. These KATUSA Soldiers have completed their mandatory service obligation to the Republic of Korea Army, but must undergo periodic refresher training on their wartime mission. (U.S. Army photo by Cpl. Choi, Kang Min)