Abetment of offences that have been committed.

    Any person subject to this Act who abets the commission of any of the offences specified in sections 34 to 66 inclusive, shall, on conviction by court-martial, if the act abetted is committed in consequence of the abetment and no express provision is made by this Act for the punishment of such abetment, be liable to suffer the punishment provided for that offence or such less punishment as is in this Act mentioned.