5-81. A relief can be characterized as either deliberate or hasty, depending on the amount of planning and preparations associated with the relief. The major differences are the depth and detail of planning and, potentially, the execution time. Detailed planning generally facilitates shorter execution time by determining exactly what the unit commander believes needs to be done and the resources needed to accomplish the mission. Deliberate planning allows unit commanders and staffs to identify, develop, and coordinate solutions to most potential problems before they occur and to ensure the availability of resources when and where they are needed. (See FM 3-90-2 for additional information on the conduct of a relief in place.)