<a href="https://en.wikipedia.org/wiki/World_War_I" id="mwqQ" rel="mw:WikiLink" title="World War I">World War I</a>: The <a href="https://en.wikipedia.org/wiki/Fifth_Battle_of_Ypres" id="mwqg" rel="mw:WikiLink" title="Fifth Battle of Ypres">Fifth Battle of Ypres</a> begins.<sup about="#mwt111" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-20"}}' id="cite_ref-20" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_28#cite_note-20" id="mwqw" style="counter-reset: mw-Ref 20;"><span class="mw-reflink-text" id="mwrA">[20]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-20"><cite about="#mwt108" class="citation book cs1" id="CITEREFSonhaus2011">Sonhaus, L. (2011). <i id="mwCE8">World War One: The Global Revolution</i>. Cambridge University Press. p.<span id="mwCFA" typeof="mw:Entity"> </span>429. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCFE" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCFI" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-521-51648-8" id="mwCFM" rel="mw:WikiLink" title="Special:BookSources/978-0-521-51648-8"><bdi id="mwCFQ">978-0-521-51648-8</bdi></a>.</cite><span about="#mwt108" class="Z3988" id="mwCFU" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=World+War+One%3A+The+Global+Revolution&amp;rft.pages=429&amp;rft.pub=Cambridge+University+Press&amp;rft.date=2011&amp;rft.isbn=978-0-521-51648-8&amp;rft.aulast=Sonhaus&amp;rft.aufirst=L.&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+28"></span></span>