The term MILITARY HQ is composed of two words: BASE (4 letters) and LOD (3 letters). BASE is a term used to refer to a military installation, such as a fort or camp. It is typically a permanent facility that houses personnel and equipment. LOD stands for Lines of Defense and is a term used to describe the defensive perimeter of a military BASE. This perimeter is usually made up of physical barriers, such as fences, walls, and guard posts, as well as electronic surveillance systems. Together, BASE and LOD form the term MILITARY HQ, which is used to refer to the headquarters of a military unit.