—(1) Except in the cases mentioned in subsection (4), no appeal shall operate as a stay of execution.
(2) The trial court may stay execution on any judgment, order, conviction or sentence pending appeal on such terms as to security for the payment of any money or the performance or non-performance of any act or the suffering of any punishment ordered by or in such judgment, order, conviction or sentence as to the Military Court of Appeal may seem reasonable.
(3) If the appellant is ultimately sentenced to imprisonment, the time during which the execution of the sentence was stayed shall be excluded in computing the term of his sentence unless the Military Court of Appeal otherwise orders.
(4) In the case of a conviction involving sentence of death —
the sentence shall not in any case be executed until after the expiration of the time within which notice of appeal may be given, or any extension of time which may be permitted, under section 129; and
if notice is so given the sentence shall not be executed until after the determination of the appeal.