Rear Admiral Samuel Nicholas Duncan was a notable figure in the United States Navy. He was born on December 12, 1860, and served with distinction during his military career. Duncan played a significant role in various naval operations and was recognized for his leadership and strategic skills. Throughout his service, Duncan held several important positions, contributing to the development of naval tactics and training. He was involved in the Spanish-American War and later served in World War I, where his expertise was invaluable. His legacy continues to be remembered in naval history.