This volume presents a selection of papers from the 13^th International Conference on Military Geosciences (ICMG), held 24-28 June 2019 in Padua, Italy. It covers a wide range of subjects within the confines of military geoscience written by scientists with a variety of different backgrounds from many countries throughout the world. Many of the papers focus on subjects related to Italy and World War I, but additional subject areas include international perspectives in the military geosciences, international security, geospatial intelligence and remote sensing, subterranean and underground warfare, analyses of historical battlefields and fortifications, and military archaeology. The book will be of interest to academics (e.g., military historians, military archaeologists, military geographers and geologists), applied geoscientists (e.g., engineering geologists and geologists working in other areas of applied geology), professional geoscientists, and those with a general interest in military geoscience and history.