American Civil War: <a href="https://en.wikipedia.org/wiki/Overland_Campaign" id="mwig" rel="mw:WikiLink" title="Overland Campaign">Overland Campaign</a>: <a href="https://en.wikipedia.org/wiki/Battle_of_Cold_Harbor" id="mwiw" rel="mw:WikiLink" title="Battle of Cold Harbor">Battle of Cold Harbor</a>: The <a href="https://en.wikipedia.org/wiki/Army_of_Northern_Virginia" id="mwjA" rel="mw:WikiLink" title="Army of Northern Virginia">Army of Northern Virginia</a> engages the <a href="https://en.wikipedia.org/wiki/Army_of_the_Potomac" id="mwjQ" rel="mw:WikiLink" title="Army of the Potomac">Army of the Potomac</a>.