lection, and each operation, prior to its adoption, requires
examination from the standpoint of suitability, feasibility, and
acceptability. Suitability involves the factor of the appropriate
effect desired; feasibility involves the factors of the means
available and opposed, as influenced by the characteristics of the
theater; and acceptability involves the factor of the consequences as
to costs.

In order to establish a sound basis for the solution of a military
problem, one which will permit the tests for suitability, feasibility,
and acceptability (see pages 98-102) to be intelligently applied, it
is necessary that the factors involved be studied.

A. The Appropriate Effect Desired.

The appropriate effect desired, the first factor listed, is the goal
toward which the commander is working. He is enabled to form an
understanding of this essential aspect of his problem through (1) a
grasp of the salient features of the situation, (2) a recognition of
the incentive to solution, and (3) an appreciation of the assigned
objective. He expresses this understanding by (4) formulating the
mission.

The sequence in which the commander takes up these considerations is a
matter for his own choice. Usually, directives from higher authority
(see Chapter VIII as to the Order Form) give him, first, information
as to the situation; thereafter, such directives assign him a task (or
tasks) involving one or more assigned objectives. For this reason, the
sequence so indicated is the one utilized here.

(1) Summary of the Situation. Before the commander can decide whether
he wishes to maintain the existing situation or to change it, he
requires a mental picture of its salient features. On beginning the
Estimate, the available information is therefore briefly summarized.
The picture presented here will show in broad outline (page 79) the
opposing forces as disposed in localities which constitute relative
positions with reference to each other. Details are reserved for
Section I-B of the Estimate.

The appropriate data are noted on the chart, and study of the chart
goes hand in hand with the development of the Estimate.

The summary of the situation may include statements as to present
activities of own and enemy forces. It may recite significant
occurrences. It does not attempt to compare or to deduce; such
processes are deferred until Section I-B. The commander extracts, from
the information furnished by higher authority, such