Fort Donelson National Military Park References Fort Donelson National Military Park park, Tennessee, United States Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Cumberland RiverFort Donelson National Military Park, in northern Tennessee on the Cumberland, commemorates the American Civil War battle that opened the Tennessee River to Union troops. Read MoreFort Donelson National Military Park, in northern Tennessee on the Cumberland, commemorates the American Civil War battle that opened the Tennessee River to Union troops. Read More