[20211122]IF10571_防务基础：美国地面部队的组织.pdf

https:/crsreports.congress.gov Updated November 22, 2021Defense Primer: Organization of U.S. Ground ForcesOverview The Army is the U.S. militarys primary ground force. Title 10, Subtitle B, Part I, Chapter 307 of the U.S. Code addresses the organization of the Army. The Marine Corps serves as the Navys land-based fighting force. Title 10, Subtitle C, Part I, Chapter 507, Section 5063 addresses Marine Corps composition and functions. For the National Guard and Reserves, see CRS In Focus IF10540, Defense Primer: Reserve Forces. Organizational Levels of U.S. Ground Forces The Congressional Budget Offices (CBOs) The U.S. Militarys Force Structure: A Primer, 2021 Update notes: The Army and Marine Corps are generally organized as hierarchies of units, with each type of unit commanded by a noncommissioned or commissioned officer of a specific rank. These units are described from smallest to largest. Squad/Team/Section. A squad is led by a sergeant and consists of 4-12 personnel. Squads can be further divided into teams or sections. Platoon. A platoonled (Army) or commanded (Marines) by a lieutenant and includes varying numbers of subordinate squads, teams, or sectionsmay vary from 16 to