To what extent does this course of action
conform to the Principle of Objective?
There is a weakness in COA BLUE-BRIGADE-COA4-2-1-MT with respect to objective because BLUE-TASK-FORCE1 is the MAIN-EFFORT1 of the COA and its assigned action is of a different type and has a significantly different focus than the main action of the COA BLUE-BRIGADE-TASK. The main effort is meant to accomplish the purpose of the COA and this may not be supported by the main effort having a different type of task and objective than the COA.
Reference: FM 100-5 pg 2-4, KF 111.1, KF 111.5 - Direct every military operation toward a clearly defined, decisive, and attainable objective. A course of action which does not have a clearly defined purpose, which the main effort accomplishes and all other efforts support, is not following the principle of objective.
Suggested corrective action: Redefine the actions assigned to the main effort of COA BLUE-BRIGADE-COA4-2-1-MT so that the main effort can accomplish the purpose of the COA, or designate a different unit as the main effort.