120. (1) Where any letter, return or other document with respect to a person,- (i) having, or not having, at any time served in, or been dismissed or discharged from any part of the armed forces of Bangladesh;(ii) having, or not having, held any rank or appointment in, or been posted or transferred to any part of such forces, or having or not having served in any particular country or place; or(iii) being, or not being, authorised to use or wear any military, naval or air force decoration, medal, medal ribbon, badge, wound stripe or emblem, the use or wearing of which by an unauthorised person is, by any law for the time being in force an offence,purports to have been signed by or on behalf of a Secretary to the Government, or by an officer of any of the headquarters of the armed forces or by the commanding officer or the officer having the custody of the records of any portion of those forces or of any ship or establishment of the Bangladesh Navy to which such person appears or alleges to belong or to have belonged shall be evidence of the facts stated in such letter, return or other document. (2) Any army, navy or air force list or gazette purporting to have been published by the competent authority shall be evidence of the status, rank and appointment of the officer or warrant officer and also of the unit or branch of the service to which he belongs according as it is shown in the list or gazette. (3) Where a record made in any service book in pursuance of this Ordinance or of any rules made thereunder or otherwise in pursuance of duty purports to have been signed by the commanding officer or by the officer whose duty it is to make such record, such record shall be evidence of the facts therein stated. (4) A copy of any record in any service book purporting to have been certified as a true copy by the officer having the custody of such book shall be evidence of such record. (5) Where any person subject to this Ordinance is being tried on a charge of desertion or of absence without leave and such person has surrendered himself into the custody of, or has been apprehended by, any officer, or any portion, of the armed forces of Bangladesh, a certificate purporting to be signed by such officer, or by the commanding officer of that portion of the armed forces and stating the fact, date and place of such surrender or apprehension, shall be evidence of the matters so stated. (6) Where any person subject to this Ordinance is being tried on a charge of desertion or of absence without leave and such person has on arrest or surrender been taken to a police station in Bangladesh, a certificate purporting to have been signed by the officer-in-charge of that police station, and stating the fact, date and place of such surrender or apprehension shall be evidence of the matters so stated. (7) Any document purporting to be a report under the hand of any Chemical Examiner or Assistant Chemical Examiner to the Government upon any matter or thing duly submitted to him for examination or analysis and report may be used as evidence in any proceeding under this Ordinance. (8) If it is proved that a person charged with an offence under this Ordinance has absconded and that there is no immediate prospect of arresting him, the commanding officer or other prescribed person may, in his absence, examine any persons who might appear to him to be acquainted with the case and record their depositions on oath and any such deposition may on the arrest of such person be used in evidence against him in any proceeding under this Ordinance, if the deponent is dead or incapable of giving evidence, or his attendance cannot be procured without an amount of delay, expense or inconvenience which under the circumstances of the case would be unreasonable.