<a href="https://en.wikipedia.org/wiki/American_Civil_War" id="mwhg" rel="mw:WikiLink" title="American Civil War">American Civil War</a>: The <a href="https://en.wikipedia.org/wiki/Battle_of_South_Mountain" id="mwhw" rel="mw:WikiLink" title="Battle of South Mountain">Battle of South Mountain</a>, part of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Maryland_Campaign" id="mwiA" rel="mw:WikiLink" title="Maryland Campaign">Maryland Campaign</a>, is fought.