This document provides a timeline and overview of various military dictatorships and regimes in Latin America between 1810-1990. It describes the rise of "caudillos" or strongman leaders after independence wars in the early 19th century. It then analyzes the legitimization of military rule through national security doctrines and professionalization of armies. The document attempts to develop a typology of militarism, categorizing regimes as dictatorial, straightening, reforming, provisional, constituent, and more based on their political aims and socioeconomic projects. Case studies are presented on prominent dictators and regimes in Brazil, Chile, Guatemala, Nicaragua, Argentina, and other countries across the region during this period.