These Rules substitute rule 8 of the Courts-Martial Appeal Rules 1968 and insert a new rule 8ZA into those Rules so as to take account of new section 36B (procedural directions: powers of single judge and registrar) and 36C (appeals against procedural directions) of the Courts-Martial (Appeals) Act 1968, inserted by section 90(3) of the Courts Act 2003 (c. 39), and provides rules supplementing the powers exercisable by the registrar under section 36A of the Courts-Martial (Appeals) Act 1968.