3-52. Commanders rely on others to execute their intent. Turning intent into reality takes the combined efforts of teams from both inside and outside their organizations. Commanders build effective teams through professional development and training. During combat, they organize their forces to accomplish their missions based on their concept of operations. They assign responsibilities, establish or delegate appropriate command or support relationships, and establish coordinating instructions. Sound organization provides for unity of effort, centralized planning, and decentralized execution. Unity of effort is necessary for effectiveness and efficiency. Centralized planning is essential for controlling and coordinating the efforts of friendly forces. Simplicity and clarity are critical when organizing Army forces with multinational forces and other unified action partners.