Final answer:
During the planning phase, the joint force commander identifies operational problems and focuses staff efforts on solutions to prepare for military operations.
Step-by-step explanation:
During the planning phase of a military operation, the joint force commander will identify the operational problems to solve and where to focus the staff's efforts. This is a crucial step in the mission planning process, where a comprehensive analysis is conducted to understand the challenges and determine the best courses of action. The problem-solving approach resonates with the quote by Tony Robbins, “Identify your problems but give your power and energy to solutions.” By focusing on solutions, the commander and their staff can effectively allocate resources and devise strategies that leverage their strengths to achieve objectives.