32 C.F.R. § 1645.3
Basis for classification in Class 4-D
In accordance with part 1630 of this chapter any registrant shall be placed in Class 4-D who is a:
(a) Duly ordained minister of religion; or
(b) Regular minister of religion.
In accordance with part 1630 of this chapter any registrant shall be placed in Class 4-D who is a:
(a) Duly ordained minister of religion; or
(b) Regular minister of religion.