The civilian authority should also include in its request an estimate of the length of time the prisoner's services will be required, and should specify the mode of transport by which it intends to return the prisoner. Upon receipt of such a request, authority by the Judge Advocate General will be given, in a proper case, for the production of the requested naval prisoner in court without resort to a writ of habeas corpus ad testificandum (a writ which requires the production of a prisoner to testify before a court of competent jurisdiction).
32 C.F.R. § 720.23