any offender who is a member should be dealt with summarily instead of being brought to trial before another court martial, may by order under the hand of the president order that member to be imprisoned for a period not exceeding twenty-one days or, in the case of a non -commissioned officer or soldier, either to be imprisoned for such a period or to undergo detention for such a period. (3) Subsection (1) shall apply, mutatis mutandis, to any proceedings at— (a) the taking of a summary or abstract of evidence; or (b) a board of inquiry; in terms of any regulations. 68 False evidence Any person who, having been lawfully sworn as a witness or interpreter in any proceedings before— (a) a military court; or (b) any board or person having authority under this Act to administer oaths; makes in those proceedings any statement which he knows to be false or does not know or believe to be true, shall be guilty of an offence and liable on conviction— (i) if he is a member, by a court martial, other than the court martial in relation to which the offence was committed, or a civil court, to imprisonment for a period not exceeding two years or any lesser punishment; (ii) if he is not a member, by a civil court, subject to the Magistrates Court Act [Chapter 7:10 ], to a fine not exceeding level seven or to imprisonment for a period not exceeding two years or to both such fine and such imprisonment: [Subparagraph amended by s. 4 of Act 22/2001] Provided that— (i) it shall not be competent for an accused to be convicted of such offence solely upon the evidence of one witness as to the falsity of the statement complained of; (ii) it shall be a sufficient defence on the trial of any such offence to prove that the false statement was not material to any issue in the original proceedings and was not to the prejudice of any person. PART VII PUNISHMENT AND EXECUTION OF SENTENCE 69 Interpretation in Part VII In this Part— “field punishment” means punishment which— (a) shall consist of such duties or drills, in addition to those which the offender might be required to perform if he were not undergoing punishment; and (b) shall consist of such loss of privileges; and (c) may include confinement in such place and manner and such personal restraint to prevent the escape of the offender; as may be prescribed; “stoppages” means stoppages of pay. 70 Punishment of officers (1) Subject to this Act, the punishments which may be imposed on an officer by sentence of a court martial are— (a) death; (b) imprisonment, with or without labour and with or without solitary confinement and spare diet; (c) cashiering or the cancellation of his commission; (d) forfeiture in the prescribed manner of seniority of rank in the Defence Forces and additionally, or alternatively, in the corps to which the offender belongs; (e) a fine or, in default of payment, imprisonment referred to in paragraph (b); (f) severe reprimand or reprimand; (g) where the offence has occasioned any expense, loss or damage, stoppages. (2) A punishment specified in any paragraph of subsection (1) shall, for the purposes of this Act, be treated as being less than the punishment specified in the preceding paragraphs and greater than those specified in the succeeding paragraphs. (3) Where an officer is sentenced by a court martial to imprisonment he shall also be sentenced to be cashiered: Provided that— (i) if the court martial fails to sentence him to be cashiered, the sentence of imprisonment shall not be invalid and shall be deemed to include a sentence of cashiering;