Which sequence correctly lists unit sizes from smallest to largest?

• A. Company, Battalion, Brigade, Division
• B. Battalion, Brigade, Division, Corps
• C. Battalion, Company, Brigade, Division
• D. Battalion, Regiment, Division, Corps

Answer: (B)

Understanding how sizes scale in military formations helps you rank these units from smallest to largest. A Battalion is the basic tactical unit and is smaller than a Brigade, which commands multiple battalions. A Division is larger still, comprising several brigades, and a Corps is even larger, made up of multiple divisions. So the natural ascending order for these four units is Battalion, Brigade, Division, Corps.

Think of rough sizes to visualize it: a Battalion is a few hundred to about a thousand soldiers, a Brigade contains several battalions, a Division includes multiple brigades, and a Corps contains multiple divisions. This progression is why that sequence is the best fit among the given options.