s 14 Using force against a sentry etc
(1) A person subject to service law commits an offence if— (a) he uses force against a member of any of Her Majesty's forces, or of any force co-operating with them, who is— (i) on guard duty and posted or ordered to patrol; (ii) on watch; or (iii) under orders to regulate traffic by land, water or air; or (b) by the threat of force he compels such a person to let him or any other person pass. (2) A person guilty of an offence under this section is liable to any punishment mentioned in the Table in section 164, but any sentence of imprisonment imposed in respect of the offence must not exceed two years.