The Bastion Intelligence Service (BIS) is the principal intelligence directorate of the Bastion Confederacy, a centralized intelligence community that is responsible for foreign intelligence, domestic intelligence, military intelligence, signals intelligence, human intelligence, and counterintelligence, amongst other variegated intelligence responsibilities. It is functionally segregated into a number of subordinate commands that handle respective responsibilities; each command is denoted with an SI ("Strategic Intelligence") number that internally denotes it: