A logistics estimate by the procedure distinctive of the first step will include in Section I-A a summary of the pertinent features of the existing strategical and tactical situation, and of contemplated strategical and tactical operations. It will also include a statement of the salient features of the existing logistics situation. The incentive, to be found in a previous decision of the commander, will be noted. The assigned objective will be the making of adequate provision for logistics support. The mission will be:-- (Task) to make provision for adequate logistics support, (Purpose) in order to contribute to freedom of action in the operations contemplated. (In each particular case the operations contemplated will be indicated by proper phraseology in the mission or by reference to the summary of the situation). Section I-B of the estimate will take account of the logistics factors cited in the Estimate Form (Chapter VI) for a basic estimate, but will specify details to the further extent necessary. Section II will discuss the various possible procedures for affording appropriate logistics support of the various categories. Section III will discuss enemy actions to hamper or prevent adequate logistics support. Section IV will deal with selection of the best logistics procedure. Section V will state the decision as to the essential elements of the logistics support to be afforded, in such detail as will constitute a general plan (or a proper basis therefor) from which a detailed plan can be developed. A detailed logistics plan, developed from the foregoing estimate, will assemble the necessary information and assumptions. It will state the general plan for logistics support. It will then provide for appropriate action as to each type of logistics support, or will state proper tasks for the several subdivisions of the force concerned therewith. It will include, also, any coordinating measures. It will, finally, make provision for exercise of command with reference to logistics support, as well as for any necessary or desirable time elements and similar considerations. * * * * * From all of the foregoing discussions it is apparent that the numerous possible subsidiary problems are all related to the basic problem either directly or through an intervening subsidiary problem. The nature of this relationship is seen through the (subsidiary) purpose, determined for the particular (subsidiary) task; therefore, the understanding of the problem involves a statement or visualization of the (subsidiary) purpose in each case. PART III THE EXERCISE OF PROFESSIONAL JUDGMENT IN THE EXECUTION OF THE PLAN CHAPTER VIII THE INAUGURATION OF THE PLANNED ACTION (The Third Step--The Formulation and Issue of Directives)