160.—Every person subject to military law—

(a) who uses a service vehicle for an unauthorised purpose, or

(b) who, without due authority, uses a service vehicle for any purpose, or

(c) who uses a service vehicle contrary to any regulation, order or instruction,

is guilty of an offence against military law and shall, F157[where a charge under this section is disposed of summarily under section 177C, 178C or 179C, as the case may be, be liable to suffer any punishment awardable thereunder or,] on conviction by court-martial, be liable to suffer imprisonment F158[for any term not exceeding two years] or any less punishment awardable by a court-martial.