When military professionals employ psychological models in appropriate ways, they may find perspectives that enable new action and points of view. As people are always changing, it is necessary to have fresh ways to understand ourselves and others. The Five-Factor Model and the Enneagram system show positive trends in scientific measuring and credibility yet are rarely used in the military. The focus herein extracts practical applications of these models for the military professional. Psychological models provide a framework to increase self-awareness, improve one's understanding of others, guide how one interacts with others, and illuminate the military activities that come most natural to the professional. Ultimately, the Five Factor Model is best suited to increase self-awareness by illuminating the military professional's natural disposition across five broad categories including openness, conscientiousness, extroversion, agreeableness, and neuroticism. The Enneagram's narrative provides a coherent image of nine different typologies and how they each tend to behave, think, and feel across various levels of performance. As archetypes, there is no one person who fits any of these categories precisely. However, these theories can serve as valuable guides for the most challenging aspect of the military profession: daily interaction in the complex world of people.

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