An officer to whom the decoration has been awarded, or who may be entitled to the decoration or to any clasp or clasps, who is convicted of an offence of treason, sedition, mutiny, cowardice, desertion, or disgraceful conduct of an unnatural kind, or who is convicted of a criminal offence by the civil power, shall, on the recommendation of the Minister of Defence and with the approval of the Governor-General, forfeit the decoration and any clasp or clasps, or any entitlement thereto.