forty-nine separate calls
... that the American Civil War saw buglers required to learn forty-nine separate calls for infantry alone?
... that the <a href="./American_Civil_War" id="mwCDU" rel="mw:WikiLink" title="American Civil War">American Civil War</a> saw <a class="mw-redirect" href="./Bugler" id="mwCDY" rel="mw:WikiLink" title="Bugler">buglers</a> <i id="mwCDc">(infantry band pictured)</i> required to learn <b id="mwCDg"><a href="./Music_of_the_American_Civil_War" id="mwCDk" rel="mw:WikiLink" title="Music of the American Civil War">forty-nine separate calls</a></b> for infantry alone?