Field army

A field army is the Western term for a large ground forces formation made up of two or more corps plus units under the direct control of the army commander. Typically, it will have at least 100,000 personnel.

While field armies were maneuvering elements in the Second World War, it is unlikely that forces this large will any longer operate as a single unit on the ground. The term, however, is used for organizations that provide the basis for a U.S. Unified Combatant Command Land Forces Component.