the Swiss Guards sacrificed themselves
... that during the 1527 sacking of Rome, the Swiss Guards sacrificed themselves to protect the Pope's retreat?
... that during the <a href="./Sack_of_Rome_(1527)" id="mwAl8" rel="mw:WikiLink" title="Sack of Rome (1527)">1527 sacking of Rome</a>, <b id="mwAmA"><a class="mw-redirect" href="./Stand_of_the_Swiss_Guard" id="mwAmE" rel="mw:WikiLink" title="Stand of the Swiss Guard">the Swiss Guards sacrificed themselves</a></b> to protect the <a href="./Pope_Clement_VII" id="mwAmI" rel="mw:WikiLink" title="Pope Clement VII">Pope's</a> retreat?