 This is due both to the close relationship between these ranks and the position held, and to the fact that these are considered "positions of importance and responsibility" in accordance with 10 USC § 601.For all other officers frocking is normally reserved for joint, international, or other high-visibility positions that require the higher rank for diplomatic, protocol, or command authority reasons.Frocking occurs on rare occasions when officers are selected for promotion to a higher rank, but have yet to reach the effective date of promotion.