Private R v Cowen

In *Private R v Cowen*, the plaintiff, a member of the Australian Defence Force (ADF), challenged the jurisdiction of a Defence Force magistrate to hear a charge of assault occasioning actual bodily harm. The alleged assault occurred off-duty and off-base, and the complainant was also a member of the ADF. The plaintiff argued that because his conduct also constituted an offence under ordinary criminal law and civil courts were available, the Defence Force magistrate lacked jurisdiction. The proceedings were brought before the High Court of Australia.

The central legal issue before the High Court was whether section 61(3) of the *Defence Force Discipline Act 1982* (Cth), which allows for the prosecution of ADF members for conduct outside the Jervis Bay Territory that would constitute a Territory offence if it occurred there, was a valid exercise of the defence power under section 51(vi) of the Constitution. Specifically, the court had to determine if the conferral of jurisdiction on a service tribunal to hear such charges was constitutionally permissible, even when civil courts could also deal with the matter.

The High Court reasoned that section 61(3) of the Act conduces to the discipline and morale of the ADF by requiring its members to abide by the standards of behaviour expected of all citizens. This requirement is sufficiently connected to the efficiency of the defence forces and, consequently, to the defence of the nation, thereby falling within the scope of the defence power. The court rejected the argument that the availability of civil courts negated the service connection, stating that the validity of the law does not depend on the immediate need in a specific case but on whether the rule prescribed is sufficiently connected with the regulation of the forces and the good order and discipline of defence members. The court affirmed that a rule requiring defence force personnel to abide by the law of the land everywhere is a basic requirement for a disciplined force organised for national defence.

The High Court dismissed the plaintiff's application and ordered that the plaintiff pay the second defendant's costs of the application.