Sergeants Course Warfighting Practice Test 2026 - Free Warfighting Practice Questions and Study Guide

The main idea here is uncertainty. In battle, you rarely have complete information about the enemy’s composition, plans, or movements, and you also face unknowns in the physical and situational environment—terrain, weather, time pressure, and how these factors will evolve. This lack of knowledge forces commanders to make educated judgments, assess risk, and stay adaptable as new information comes in. Friction, disorder, and the human dimension describe other aspects of war—resistance to action, breakdowns in coherence, and the people involved—but they don’t capture the ongoing lack of knowledge about enemy and environment in the way uncertainty does.