The study of military history has evolved into a multidisciplinary effort to go beyond the history of military operations to consider broader political, cultural, and social questions. It spans across several disciplines and genres, including sociology and political science, biography, war and battle narratives, the history of technology, foreign affairs and international relations, and various national histories. From ancient military history to contemporary studies of international conflict, a great deal of this work has moved online with the most recent scholarship, research, and statistics appearing in online databases and often only discoverable through online search tools. With advances in online searching and database technologies, researchers can easily access library catalogs, bibliographic indexes, and other lists that show thousands of resources that might also be useful to them. In this situation what is most needed is expert guidance. Researchers at all levels need tools that help them filter through the proliferation of information sources to material that is reliable and directly relevant to their inquiries. Oxford Bibliographies in Military History will offer a trustworthy pathway through the thicket of information overload.