Fernando Nadra's book is dedicated to two outstanding historical figures of Latin America—José de San Martín and Martín Miguel de Güemes—who played a key role in the struggle for independence of the Spanish colonies in South America in the early 19th century. The author thoroughly investigates their military and political strategies, personal qualities, and contribution to shaping the national identity of the region's countries. This historical study reveals little-known facts about the biographies of these revolutionary leaders, their relationships, and their joint struggle against Spanish rule. The book is of interest both to historians and to a wide range of readers interested in the history of Latin America and liberation movements.