What is one of the main factors that can negatively affect a promotion score?

Lack of professionalism or disciplinary actions can significantly impact a soldier's promotion score because promotion boards evaluate not only a soldier's technical skills and knowledge but also their character and conduct. Professionalism is a reflection of a soldier's commitment to the Army values, adherence to regulations, and ability to work effectively within a team. Disciplinary actions, including non-judicial punishments, can indicate a lack of reliability and, consequently, a higher risk factor for leadership positions, which are essential when considering someone for promotion.

While other choices may also influence promotion scores, a lack of professionalism is particularly detrimental because it speaks to the soldier's integrity and their alignment with the Army's core values, which are crucial for higher responsibilities and leadership roles. A soldier's overall character can often weigh heavily in promotion considerations, making this a critical aspect to maintain.