“ The punishment for desertion when joined in by two or more soldiers in the execution of a conspiracy, or for desertion in the presence of an outbreak of Indians or of any unlawful assemblage which the troops may be opposing, shall not exceed dishonorable discharge, forfeiture of all pay and allowances, and confinement at, hard labor for five years. ”

“ Article IV. When a soldier shall, on one arraignment, be convicted of two or more offenses, none of which is punishable under Article II of this order or the custom of the service with dishonorable discharge, but the aggregate term of confinement for which, as specified in said article, may exceed six months, dishonorable discharge with forfeiture of pay and allowances may be awarded in addition to the authorized confinement. ”

“ These convictions must be proved by the records of previous trials and convictions, or by duly authenticated copies of such records, or by duly authenticated copies of the orders promulgating such trials and convictions. ”