November 1863Reputable sourceWell documented
The Battles for Chattanooga
On the timeline · around November 1863 ·
What happened
In late November 1863, Union forces under Grant broke the Confederate siege of Chattanooga, Tennessee, storming Lookout Mountain and the seemingly impregnable heights of Missionary Ridge.
Why it matters
The victory routed a Confederate army and opened the gateway to the Deep South — the launching point for Sherman's campaign against Atlanta.