The term 'Military Zone' can be broken down into two crossword solutions: SECTOR (6 letters). A SECTOR is an area of land or sea that is divided for military or administrative purposes. It is typically used to refer to a geographic region, such as a battlefield or a region of a country. In the military, sectors are often divided into smaller units, such as battalions or regiments. The term is also used to refer to a specific area of responsibility within a larger organization, such as a government agency or a company.