There are three geographical subspecies: Sciurus griseus griseus (central Washington to the western Sierra Nevada in central California); S. g. nigripes (from south of San Francisco Bay to San Luis Obispo County, California; and S. g. anthonyi, which ranges from San Luis Obispo to northern Baja California).
Unity of command is ensuring unity of effort under one responsible person (or commander) for completing a task. This unity of command is one of the twelve principles of joint operations, and is defined as:
Lesson Transcript. Instructor: Shawn Grimsley. Span of control and unity of command are two important principles in management. In this lesson, you'll learn about span of control and unity of command and be provided some examples of each. A short quiz follows the lesson.pan of control refers to the number of employees a manager has under his control and will be based on such factors as type, complexity and variability of the work task managed. Unity of command is a management principle that states an employee should be answerable and responsible to only one person in the organization.