As far as I know all branches of the services in any country that had Chaplains/Padres the person appointed would become an officer. Some had assistants who were just ordinary servicemen (or I suppose officers) who would help them. I have a book with a photograph of Christopher Chavasse a Chaplain during WW1 dressed in his army uniform, complete with Sam Browne belt. The only item different from other officers at that time is his clerical collar. Another photograph later in the war was Christopher with Noel his brother (Noel Chavasse VC and Bar). Both are dressed identically with Noel wearing a Sam Brown Belt, Christopher is not wearing one. Christopher has his clerical collar on.