The Appellant at the material time serving at Battalion of the Regular Army is also a qualified dentist. Before his arraignment, conviction and punishment by the General Court Martial he held the higher rank of Captain. It was due to his conviction that he was demoted to Lieutenant. This sentence is the basis of the Appellant’s ground of appeal, where he challenges, inter alia, “the legality of the whole sentence of reduction in rank from Captain to Lieutenant”. It is obvious from the grounds of appeal that the Appellant does not dispute the merits of the findings of fact by the trial Court Martial. His complaint touches upon matters purely of law forming two limbs—the legality of the proceedings as a whole, and the legality of the sentence.