Unlike other branches of service, Once a Marine, Always a Marine. Marines are taught leadership skills from the beginning. Whether you’re a brand new Private or a boot 2nd Lieutenant. 14 leadership traits are emphasized. For Marines, it’s all about the mission, every decision affects the ability to accomplish that mission. To become an effective leader, Marines will strive to become an expert in their field and aim to cultivate these essential leadership traits. Justice, Judgment, Dependability, Initiative, Decisiveness, Tact, Integrity, Endurance, Bearing, Unselfishness, Courage, Knowledge, Loyalty, & Enthusiasm. Mastery of these traits will produce success.