<a href="https://en.wikipedia.org/wiki/Mexican_Revolution" id="mw2w" rel="mw:WikiLink" title="Mexican Revolution">Mexican Revolution</a>: <a href="https://en.wikipedia.org/wiki/Battle_of_Ambos_Nogales" id="mw3A" rel="mw:WikiLink" title="Battle of Ambos Nogales">Battle of Ambos Nogales</a>: <a href="https://en.wikipedia.org/wiki/United_States_Army" id="mw3Q" rel="mw:WikiLink" title="United States Army">U.S. Army</a> forces skirmish against Mexican <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Carrancistas" id="mw3g" rel="mw:WikiLink" title="Carrancistas">Carrancistas</a> in the only battle of <a href="https://en.wikipedia.org/wiki/World_War_I" id="mw3w" rel="mw:WikiLink" title="World War I">World War I</a> fought on American soil.