World War I: The <a href="https://en.wikipedia.org/wiki/British_heavy_tanks_of_the_First_World_War" id="mwew" rel="mw:WikiLink" title="British heavy tanks of the First World War">first tank</a> prototype, developed by <a href="https://en.wikipedia.org/wiki/William_Foster_&amp;_Co." id="mwfA" rel="mw:WikiLink" title="William Foster &amp; Co.">William Foster &amp; Co.</a> for the British army, was completed and given its first test drive.<sup about="#mwt23" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_6#cite_note-2" id="mwfQ" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwfg">[2]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt20" class="citation web cs1" id="mwB28"><a class="external text" href="https://365daysofmotoring.com/the-first-tank-prototype-developed-by-william-foster-company-for-the-british-army-was-completed-and-given-its-first-test-drive/" id="mwB3A" rel="mw:ExtLink nofollow">"On This Day In Automotive History Motoring"</a>. <i id="mwB3E">365 Days Of Motoring</i>. 6 September 1915.</cite><span about="#mwt20" class="Z3988" id="mwB3I" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=365+Days+Of+Motoring&amp;rft.atitle=On+This+Day+In+Automotive+History+Motoring&amp;rft.date=1915-09-06&amp;rft_id=https%3A%2F%2F365daysofmotoring.com%2Fthe-first-tank-prototype-developed-by-william-foster-company-for-the-british-army-was-completed-and-given-its-first-test-drive%2F&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+6"></span></span>