According to the leadership principles, what is important for a leader to have regarding their team?

A leader in the Marine Corps must prioritize understanding their Marines and their welfare because effective leadership is inherently people-centered. Knowledge of the team allows a leader to build trust, foster morale, and enhance motivation among the Marines. This understanding directly impacts a unit's cohesion, effectiveness, and overall mission success. Leaders who are attuned to the needs, concerns, and well-being of their personnel can make informed decisions that support their development and address any challenges they face, creating a positive environment conducive to peak performance.

While proficiency in weapon systems, technical skills, and advanced strategic planning are valuable assets, they do not replace the foundational importance of a leader's relationship with their team. A leader who knows their Marines can better support their growth and maintain operational readiness, thus ensuring that the unit performs at its best.