Which type of exercise is meant for training and evaluating small-unit leaders in their command ability?

The correct choice, FCX, refers to a Field Command Exercise. This type of exercise is specifically designed to train and evaluate small-unit leaders on their command abilities. In an FCX, leaders are placed in simulated operational environments where they must make decisions, adapt to changing situations, and demonstrate their ability to command their units effectively. This hands-on experience is crucial for developing leadership skills and understanding the dynamics of small unit operations.

In comparison, a Field Training Exercise (FTX) typically focuses on the broader training of units in a realistic environment but may not evaluate leadership specifically as closely as an FCX would. A COMMEX, or Communication Exercise, assesses communication systems and protocols rather than command abilities. Tactical Drills are brief, focused practices on specific tasks or procedures but lack the comprehensive evaluation aspect of command that an FCX provides. Thus, the FCX is uniquely suited for assessing and improving the command capabilities of small-unit leaders.