Unlike a conventional war waged against a standing army, a "dirty war" is waged against individuals, groups, or ideas considered subversive. Originally associated with Argentina's military regime from 1976-1983, the term has since been applied to neighboring dictatorships during the period. Indeed, it has become a byword for state-sponsored repression anywhere in the world. The first edition of this reference illustrated the concept by describing the regimes of Argentina, Chile (1973-1990), and Uruguay (1973-1985), which tortured, murdered, and disappeared thousands of people in the name of anticommunism while thousands more were driven into exile. The second edition expands the scope to include Bolivia (1971-1982), Brazil (1964-1985), and Paraguay (1954-1989). In mid-1975 the six countries joined forces, creating Operation Condor, a top-secret military network that hunted down one another's political enemies. This second edition of Historical Dictionary of "The Dirty Wars" focuses on the period 1954-1990 in South America, when authoritarian regimes waged war on subversion, both real and imagined. This is done through a chronology, an introductory essay, a bibliography, and over 400 cross-referenced dictionary entries on the countries; guerrilla and political movements; prominent guerrilla, human-rights, military, and political figures; local, regional, and international human-rights organizations; and artistic figures (filmmakers, novelists, and playwrights) whose works attempt to represent or resist the period of repression.