The Academy is a prestigious international institution for the study and teaching of Public and Private International Law and related subjects. The work of the Hague Academy receives the support and recognition of the UN. Its purpose is to encourage a thorough and impartial examination of the problems arising from international relations in the field of law. The courses deal with the theoretical and practical aspects of the subject, including legislation and case law. All courses at the Academy are, in principle, published in the language in which they were delivered in the "Collected Courses of the Hague Academy of International Law .

Wilhelm G. Grewe's "Epochen der Völkerrechtsgeschichte", published in 1984, is widely regarded as one of the classic twentieth century works of international law. This revised translation by Michael Byers of Duke University, Durham, North Carolina, makes this important book available to non-German readers for the first time. "The Epocs of International Law" provides a theoretical overview and detailed analysis of the history of international law from the Middle Ages, to the Age of Discovery and the Thirty Years War, from Napoleon Bonaparte to the Treaty of Versailles, the Cold War and the Age of the Single Superpower, and does so in a way that reflects Grewe's own experience as one of Germany's leading diplomats and professors of international law. A new chapter, written by Wilhelm G. Grewe and Michael Byers, updates the book to October 1998, making the revised translation of interest to German international layers, international relations scholars and historians as well. Wilhelm G. Grewe was one of Germany's leading diplomats, serving as West German ambassador to Washington, Tokyo and NATO, and was a member of the International Court of Arbitration in The Hague. Subsequently professor of International Law at the University of Freiburg, he remains one of Germany's most famous academic lawyers. Wilhelm G. Grewe died in January 2000. Professor Dr. Michael Byers, Duke University, School of Law, Durham, North Carolina, formerly a Fellow of Jesus College, Oxford, and a visiting Fellow of the Max-Planck-Institute for Comparative Public Law and International Law, Heidelberg.

First published in 1933, this is one of the seminal works on international law, written by a legendary scholar in the field. This republication, featuring a new introduction by Professor Martti Koskenniemi, once again makes this book available to scholars and students in this area.