Belligerent Occupation — Killing, Torture, Ill-treatment and Deportation of Civilian Inhabitants — Hostages and Reprisals — War Crimes as Reprisals — Resistance Movement and Guerrilla Warfare in Occupied Territory — Fundamental Principles of Justice as Part of International Law — Principle of Nullum Crimen Sine Lege — Rules of Warfare and the Legality of War — Plea of Military Necessity — Wanton Devastation of Property in Occupied Territory During Retreat of Occupying Armed Forces — Plea of Superior Orders — Responsibility of Military Commander in Occupied Territory.