It shall be an honourable understanding that each Candidate for Exaltation or as a Joining Companion shall have served in one of the armed forces, mercantile marine, or served under the Crown in any capacity or be a son, grandson, step-son or son-in-law of one who has so served, and may have the privilege of proposing their sons, adopted sons, step-sons, and grandsons as candidates for Exaltation or as Joining Companions of the Chapter always providing that they agree to respect and uphold the Service traditions of the Chapter.