Endurance is the mental and physical stamina that is measured by your ability to withstand pain, fatigue, stress, and hardship. For example, enduring pain during a conditioning march in order to improve stamina is crucial in the development of leadership.

Develop your endurance by engaging in physical training that will strengthen your body. Finish every task to the best of your ability by forcing yourself to continue when you are physically tired and your mind is sluggish.

Loyalty means that you are devoted to your country, the Corps, and to your seniors, peers, and subordinates. The motto of our Corps is Semper Fidelis!, (Always Faithful). You owe unwavering loyalty up and down the chain of command, to seniors, subordinates, and peers.

To improve your loyalty you should show your loyalty by never discussing the problems of the Marine Corps or your unit with outsiders. Never talk about seniors unfavorably in front of your subordinates. Once a decision is made and the order is given to execute it, carry out that order willingly as if it were your own.

Knowledge is the understanding of a science or art. Knowledge means that you have acquired information and that you understand people. Your knowledge should be broad, and in addition to knowing your job, you should know your unit's policies and keep up with current events.

Increase your knowledge by remaining alert. Listen, observe, and find out about things you don't understand. Study field manuals and other military literature.