Jurisdiction — Offence Committed Outside the Territory of the State — Colonial Parliaments — Legislative Competence — Power to Enact Extraterritorial Legislation — High Treason — Allegiance — Dual Allegiance — Enemy Alien in Armed Forces — Superior Allegiance — Change of Nationality in Wartime — Duty of Allegiance to Local State — Termination of Allegiance — Capture as Prisoner-of-War by Enemy Forces — Survival of Allegiance to Local State — Sovereignty — British Commonwealth of Nations — Position of Crown — Union of South Africa — Whether Possessing Sovereignty and Majestas in the Technical Sense — Right of State to Self-preservation — Law of Union of South Africa.