[20211122]IF10544_防务基础：陆军部和陆军指挥结构.pdf

https:/crsreports.congress.gov Updated November 22, 2021Defense Primer: Department of the Army and Army Command StructureOverview Article I, Section 8, Clause 12 of the Constitution stipulates, “The Congress shall have power . to raise and support Armies . make rules for the government and regulation of the land and naval forces . for calling forth the militia to execute the laws of the Union, suppress insurrections and repel invasions.” The Department of the Army (DA) is one of the three military departments reporting to the Department of Defense (DOD). The Armys primary mission is to fight and win the nations ground wars. The Armys mission is both operational and institutional, and it is composed of four distinct components: the regular Active Component (AC), the reserve components of the United States Army Reserve (USAR), the Army National Guard (ARNG), and Department of the Army civilians (DAC). See Figure 1. The Regular Army is the full-time, federal force of AC soldiers. USAR is a federal reserve force that provides specialized units and capabilities, as well as individual soldiers when mobilized. ARNG is a dual-status force that normally remains under the command of state g