Upon acquisition of the additional lands pursuant to authority contained in sections
428k to
428o of this title, the Fort Donelson National Military Park shall be redesignated by the Secretary of the Interior as the Fort Donelson National Battlefield, notice thereof shall be published in the Federal Register, and any remaining balance of funds appropriated for purposes of the Fort Donelson National Military Park shall be available for the purposes of the Fort Donelson National Battlefield.