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:
Unity of Title Law and Legal Definition. Unity of title is a term used in relation to joint ownership of property. Unity of title means that all owners must receive their interest/title through the same event or from the same source. It is one of the requirements needed to determine that a joint tenancy exists.