John William De Forest (1826–1906) was an American author, best known for his realistic narratives of the Civil War and postbellum American life. His work, 'Miss Ravenel's Conversion from Secession to Loyalty' (1867), is considered a pioneering example of realistic fiction in American literature and an early forerunner to the genre that would come to be known as the Great American Novel. De Forest's literary style blends detailed observation of the quotidian aspects of life with a sharp eye for the moral complexities of his characters. Drawing from his own experiences as a Union officer during the Civil War, De Forest situated his novel in the broader context of national struggle and transformation, embodying the era's tangled allegiances and societal upheavals through the lens of his protagonist, Lillie Ravenel. De Forest's other works, including his war stories and his lesser-known novels such as 'Kate Beaumont' and 'Playing the Mischief', further showcase his skills as a chronicler of American society, dissecting the social mores and human conditions of the 19th century with acuity. Although contemporary acclaim was somewhat muted and many of his writings have fallen into relative obscurity, modern critics have re-evaluated De Forest as a significant figure in the evolution of realism in American literature, and his novels, particularly 'Miss Ravenel's Conversion', continue to be discussed for their historical value and their nuanced examination of character and culture.