Which term denotes the level of plan with the least detail?

• A. Base Plan
• B. Area of Interest
• C. Commander's estimate
• D. 10

Answer: (C)

Understanding how planning levels differ by detail helps. The base plan represents the least-detailed level because it outlines the mission and a broad approach without specifying exact actions, timings, or resource allocations. It provides a foundational framework that can be elaborated into more detailed operation plans later. The other terms don’t describe this low-detail level: an area of interest is about the geographic or thematic focus, not how detailed a plan is; the commander’s estimate is the process of evaluating options and producing decisions, not a plan with minimal detail; the digit is not a term used for plan detail level.