Chief
... that Chief was the United States Army's last cavalry horse?
... that <b id="mwAms"><a href="./Chief_(horse)" id="mwAmw" rel="mw:WikiLink" title="Chief (horse)">Chief</a></b> was the <a href="./United_States_Army" id="mwAm0" rel="mw:WikiLink" title="United States Army">United States Army</a>'s last <a href="./Horses_in_warfare" id="mwAm4" rel="mw:WikiLink" title="Horses in warfare">cavalry horse</a>?