Which phase of an amphibious operation involves preparing forces for the execution of the mission?

The phase of an amphibious operation that involves preparing forces for the execution of the mission is the planning phase. This stage encompasses the detailed coordination and organization necessary to ensure that all elements are ready and can act in unison once the operation begins. During planning, various aspects such as logistics, targets, troop movements, and timing are analyzed and organized to form a comprehensive strategy that guides the operation.

The planning phase is critical because it allows for the identification of potential challenges and the development of contingencies to address them. Proper planning ensures that forces are adequately equipped, that communication systems are established, and that everyone involved understands their roles and responsibilities, which is essential for the success of the mission.

In contrast, the movement phase would involve the actual transition of forces from their initial locations to the operational area, while embarkation focuses more on the physical loading of troops and equipment onto ships. The rehearsal phase is where troops practice their roles to ensure preparedness and cohesion, but it comes after the planning is complete. Thus, planning is foundational to effective mission execution.