The <a href="https://en.wikipedia.org/wiki/Battle_of_Arnemuiden" id="mwHw" rel="mw:WikiLink" title="Battle of Arnemuiden">Battle of Arnemuiden</a>, in which a French force defeats the English, is the first naval battle of the <a href="https://en.wikipedia.org/wiki/Hundred_Years'_War" id="mwIA" rel="mw:WikiLink" title="Hundred Years' War">Hundred Years' War</a> and the first naval battle in which gunpowder artillery is used.<sup about="#mwt20" class="mw-ref reference" data-mw='{"name":"ref","attrs":{"name":"Castex"},"body":{"id":"mw-reference-text-cite_note-Castex-2"}}' id="cite_ref-Castex_2-0" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_23#cite_note-Castex-2" id="mwIQ" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwIg">[2]</span></a></sup>