Which principle is focused on preventing the enemy from gaining an unexpected advantage?

• A. Surprise
• B. Mass
• C. Objective
• D. Security

Answer: (D)

Security is the principle that centers on keeping your force from being caught off guard by protecting information, locations, and capabilities, and by maintaining readiness so the enemy cannot exploit vulnerabilities. It includes guarding routes, securing communications, OPSEC, reconnaissance, camouflage, and disciplined procedures to detect and deny threats before they can gain an advantage. This focus on preventing the enemy from slipping an unexpected opportunity makes it the best fit for the question. The idea of surprise is about hoping to catch the enemy unawares, mass is about concentrating power at a decisive point, and objective is about guiding actions toward a clear end state; security specifically targets preventing the enemy from obtaining an unanticipated edge.