What was the defining concept of a Pentomic Division?

• A. Five battle groups for use on atomic battlefields
• B. Four armored brigades
• C. Three airborne regiments
• D. Two mechanized infantry brigades

Answer: (A)

The defining concept is organizing the division around five battle groups to operate on a nuclear battlefield. The term Pentomic reflects this five-part structure, replacing the traditional regimental system with five autonomous, self-contained battle groups. Each group would include infantry, armor or mechanized forces, artillery, engineers, and support elements, allowing dispersed, rapid action across a wide front and preserving combat power even if part of the line was damaged. This five-group arrangement is what gives the Pentagon’s Pentomic division its name and core purpose.

The other options describe different force compositions that don’t match the five-battle-group concept, which is why they don’t fit the defining idea of a Pentomic Division.