This Bibliographical Calendar focuses on a general armed conflict within Europe that spread to most parts of the world. It started during the second decade of the twentieth century. In this context the present Calendar offers an overview of the chronology leading up to the First World War. It is also a documented survey of official transactions relating to the World War with particular attention to the sources of record. The main focus of the work is on diplomatic acts of the belligerent and neutral parties that accompanied the military dimension of the conflict.

The Calendar assumes the form of a compilation of related kinds of information situated between a bibliography and a repertory, with the aim of elucidating the course of World War One from the perspectives of international law and diplomacy.