Commander/kəˈmændər/ Definition 1 of 4Pro Tip 1/3Military Authority Used to show someone's responsibility for directing military operations. As the commander, she makes critical decisions during battles. Pro Tip 2/3Leadership Role Implies a leadership position often involving strategy and management. The new commander quickly organized the troops. Pro Tip 3/3Respect and Obedience Commands respect and obedience from subordinates in a group. Soldiers saluted as the commander walked by.