What is an essential quality that Soldiers must display during a promotion board?

Professionalism is an essential quality that Soldiers must display during a promotion board because it reflects their ability to represent the Army's values and standards effectively. This encompasses behavior, attitude, and the ability to communicate clearly and respectfully, which are critical in a military environment. Demonstrating professionalism shows that a Soldier is reliable, responsible, and capable of leading others, traits that are vital in higher ranks.

Professionalism also encapsulates adherence to military customs and courtesies, maintaining a positive demeanor, and showing respect towards fellow Soldiers and board members alike. Being viewed as a professional enhances a Soldier's credibility and suitability for promotion, making it a fundamental aspect of the evaluation process.

While physical strength, technical proficiency, and experience are important qualities, they are more specific attributes and do not encompass the broader, holistic approach to leadership and conduct that professionalism represents.