Joint force commanders (JFCs) have routinely exercised authority to reorganize and break apart attached forces under the guise of operational control (OPCON). This exercise has become common practice because of misinterpretations of joint doctrine. Specifically, many officers believe that the authority to direct the internal organization of an attached force is contained within the jointly defined authorities of operational control. This belief is fallacious. Joint doctrine does not delineate the authority to internally organize an attached command or force as an authority inherent to OPCON.