The
United States Department of Defense defines a COG as "the source of power that provides moral or physical strength, freedom of action, or will to act", although there has been a significant and widespread push to revert to a more classical, Clausewitzian interpretation of the phrase. There are twelve qualities of COGs the
Joint Chiefs of Staff have doctrinally recognized: • Exists at each level of warfare • Mostly physical at operational and tactical levels • Is a source of leverage • Allows or enhances freedom of action • May be where the enemy's force is most densely concentrated • Can endanger one's own COGs • May be transitory in nature • Linked to objective(s) • Dependent upon adversarial relationship • Can shift over time or between phases • Often depends on factors of time and space • Contains many intangible elements at strategic level Because the COG is one or multiple root enablers of a combatant's ability to interfere with the objectives of an opponent, friendly force composition plays just as significant a role in how this concept is interpreted as that of the opponent. As such, each of the various
United States Armed Forces Service branches understand the concept through a unique lens specific to that branch's structure and operational priorities and capabilities. Due to the size and scale of the
United States Army, it tends to recognize a COG as a combatant's
strongest characteristic, capability, or locality. Conversely, due to the lower personnel count of the
United States Marine Corps, they tend to view a COG as the
weakness of a combatant. On the other hand, the
United States Air Force takes a "targeting" approach to warfare, meaning they often treat COGs as a series of bombable strategic and operational-critical targets. This means, in the case of an insurgency, the U.S. military may define their opponent's COG as the entire host population, a core group of leaders/believers, or an external nation's material, financial, or political support. == Center of gravity analysis ==