Which of the following is an Army echelon listed in the material?

• A. Theater Army
• B. Regiment
• C. Battalion
• D. Company

Answer: (A)

An echelon is a level of command in the Army hierarchy. In theater operations, the Theater Army is the top Army-level command that coordinates multiple corps and divisions across the whole theater. It represents a command level, not a subordinate unit. The other terms describe actual units within echelons: a regiment, battalion, and company are progressively smaller units that operate under higher commands, not the level of command itself. So the Theater Army is the Army echelon listed in the material.