Tactical and technical competence can be learned from books and from on the job training. Seek out and associate with capable leaders. Observe and study their actions. Broaden your knowledge through association with members of other branches of the U. S. armed services. Seek opportunities to apply knowledge through the exercise of command.
Good leadership is acquired only through practice.
Prepare yourself for the job of leader at the next higher rank. Know your Marines and look out for their welfare. This is one of the most important of the principles. You should know your Marines and how they react to different situations. This knowledge can save lives.