军事地理学既是地理学一的个分支学科，也是军事学的一个分支学科，其主要是依据国家政治和军事战略和考虑，全面分析同战争有关的自然地理和人文地理等因素所构成的综合地理环境对国防建设、军事行动的相互制约和影响的一门学科。自从二战以来，军事地理学已经成为和平或战争时期时，集合地理学、信息学和技术学以解决军事问题的应用工具。

Military geography is a sub-field of geography that is used by the military, as well as academics and politicians, to understand the geopolitical sphere through the military lens. To accomplish these ends, military geographers consider topics from geopolitics to physical locations’ influences on military operations and the cultural and economic impacts of a military presence. On a tactical level, a military geographer might put together the terrain and the drainage system below the surface, so a unit is not at a disadvantage if the enemy uses the drainage system to ambush it, especially in urban warfare.