Leadership remains at the core of the military profession. Gaining a reputation as an effective and ethical leader is the foundation for a successful career as a commissioned and noncommissioned officer. Naturally, a great deal of attention in pre-commissioning and professional military schools, as well as experiential learning in a variety of demanding positions, is necessary for advancement. Understanding the ideas and best practices of expert leaders as individuals and as a member of groups, teams, organizations, and institutions remain an important area of research and study for individual and organizational learning. Learning leaders and learning organizations are the focus of this monograph. Specific attention is placed on identifying the key ideas and actions, or best practices, in comparing the leadership studies and research literature that bridge the guiding civilian and military approaches, and compares ideas and practices across the public, private, and nonprofit sectors.