The Union artillery played a major role in the outcome of the Vicksburg Campaign.
To Confederate President Jefferson Davis, Vicksburg was the "nailhead that holds the South's two halves together." President Abraham Lincoln remarked "Vicksburg is the key" to victory, and could be the north's lifeline into the south. As the federals closed in on the Fortress City, they were met by a ring of forts with over 170 cannon. The resulting battle would determine the war's outcome.
On September 2, 2025, the National Park Service (NPS) will begin comprehensive restoration work on the Illinois Memorial. The memorial itself will be closed during the restoration starting on September 2. The parking area will be partially closed, however there will still be parking spaces open to allow access to the Shirley House. The Tour Road will remain open. The contractors have up to one year to complete the project.
On March 3, 2025, the National Park Service (NPS) will begin repair work on Grant Circle and a section of Union Ave in the northern portion of the park. Following heavy rainfall in early 2020, these roads suffered catastrophic failures necessitating closure to ensure visitor safety. These roads have been closed since that time.