The U.S. Military’s Force Structure: A Primer, 2021 Update


This update of CBO’s 2016 primer on the structure of the U.S. military describes the size, functions, and operation and support costs of every major element of the armed forces.

CBO has developed an Interactive Force Structure Tool that lets users add or subtract brigades, ships, aircraft squadrons, and other units to see the effects on the Department of Defense’s operation and support costs and the size of the military.

Data and Supplemental Information