Unadilla-class gunboats
... that during the American Civil War, the U.S. Navy's Unadilla-class gunboats played a leading role in the capture of New Orleans?
... that during the <a href="./American_Civil_War" id="mwD1M" rel="mw:WikiLink" title="American Civil War">American Civil War</a>, the <a href="./Union_Navy" id="mwD1Q" rel="mw:WikiLink" title="Union Navy">U.S. Navy</a><span about="#mwt71" class="nowrap" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;'&quot;,&quot;href&quot;:&quot;./Template:'&quot;},&quot;params&quot;:{},&quot;i&quot;:0}}]}" id="mwD1U" style="padding-left:0.1em;" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span></span>s <b id="mwD1Y"><a class="mw-redirect" href="./Unadilla_class_gunboat" id="mwD1c" rel="mw:WikiLink" title="Unadilla class gunboat"><i id="mwD1g">Unadilla</i>-class gunboats</a></b> <i id="mwD1k">(example pictured)</i> played a leading role in the <a href="./Battle_of_Forts_Jackson_and_St._Philip" id="mwD1o" rel="mw:WikiLink" title="Battle of Forts Jackson and St. Philip">capture</a> of <a href="./New_Orleans" id="mwD1s" rel="mw:WikiLink" title="New Orleans">New Orleans</a>?