<a href="https://en.wikipedia.org/wiki/American_Civil_War" id="mwjg" rel="mw:WikiLink" title="American Civil War">American Civil War</a>: The <a href="https://en.wikipedia.org/wiki/Battle_of_Chickamauga" id="mwjw" rel="mw:WikiLink" title="Battle of Chickamauga">Battle of Chickamauga</a> begins between Confederate and Union forces. It involves the second highest amount of casualties for any <a href="https://en.wikipedia.org/wiki/American_Civil_War" id="mwkA" rel="mw:WikiLink" title="American Civil War">American Civil War</a> battle apart from <a href="https://en.wikipedia.org/wiki/Battle_of_Gettysburg" id="mwkQ" rel="mw:WikiLink" title="Battle of Gettysburg">Gettysburg</a>.<sup about="#mwt55" class="mw-ref reference" data-mw='{"name":"ref","attrs":{"name":"dates"},"body":{"id":"mw-reference-text-cite_note-dates-9"}}' id="cite_ref-dates_9-0" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_18#cite_note-dates-9" id="mwkg" style="counter-reset: mw-Ref 9;"><span class="mw-reflink-text" id="mwkw">[9]</span></a></sup>