<a href="https://en.wikipedia.org/wiki/American_Civil_War" id="mwog" rel="mw:WikiLink" title="American Civil War">American Civil War</a>: The <a href="https://en.wikipedia.org/wiki/Union_Army" id="mwow" rel="mw:WikiLink" title="Union Army">Union Army</a> enters <a href="https://en.wikipedia.org/wiki/Chattanooga,_Tennessee" id="mwpA" rel="mw:WikiLink" title="Chattanooga, Tennessee">Chattanooga, Tennessee</a>.