Frederick Augustus Mitchel, known as F. A. Mitchel, was an American author and biographer, best recognized for his work on the life of Ormsby Macknight Mitchel, an influential astronomer and general. Born in 1839, Mitchel dedicated much of his literary career to chronicling the achievements and contributions of notable figures in science and military history. His most significant work, 'Ormsby Macknight Mitchel, astronomer and general; a biographical narrative,' provides an in-depth look at Mitchel's dual legacy in both astronomy and the Civil War, highlighting his role in advancing astronomical education and his commitment to the Union cause during a turbulent period in American history. Mitchel's writing is notable for its detailed research and engaging narrative style, which not only illuminates the life of his subject but also reflects the broader scientific and military contexts of the 19th century. Through his biographical narrative, Mitchel contributed to the preservation of historical memory, ensuring that the accomplishments of figures like Ormsby Macknight Mitchel were recognized and appreciated. His work remains a valuable resource for understanding the intersection of science and military service in American history, as well as the personal stories that shaped these fields.