Louisville's fortifications
...that none of Louisville's fortifications for the American Civil War were ever used, as Louisville was never endangered while they existed?
...that none of <b id="mwB8Y"><a href="./American_Civil_War_fortifications_in_Louisville" id="mwB8c" rel="mw:WikiLink" title="American Civil War fortifications in Louisville">Louisville's fortifications</a></b> for the <a href="./American_Civil_War" id="mwB8g" rel="mw:WikiLink" title="American Civil War">American Civil War</a> were ever used, as Louisville was never endangered while they existed?