The <a class="mw-redirect" href="https://en.wikipedia.org/wiki/R.A.F." id="mwxA" rel="mw:WikiLink" title="R.A.F.">R.A.F.</a> drop the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Grand_Slam_bomb" id="mwxQ" rel="mw:WikiLink" title="Grand Slam bomb">Grand Slam bomb</a> in action for the first time, on a railway viaduct near <a href="https://en.wikipedia.org/wiki/Bielefeld" id="mwxg" rel="mw:WikiLink" title="Bielefeld">Bielefeld</a>, Germany.<sup about="#mwt115" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-22"}}' id="cite_ref-22" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_14#cite_note-22" id="mwxw" style="counter-reset: mw-Ref 22;"><span class="mw-reflink-text" id="mwyA">[22]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-22"><cite about="#mwt112" class="citation book cs1" id="CITEREFThetford1957">Thetford, Owen (1957). <a class="external text" href="https://books.google.com/books?id=Hr4MAQAAIAAJ" id="mwCCo" rel="mw:ExtLink nofollow"><i id="mwCCs">Aircraft of the Royal Air Force, 1918-57</i></a>. Putnam. p.<span id="mwCCw" typeof="mw:Entity"> </span>59<span class="reference-accessdate" id="mwCC0">. Retrieved <span class="nowrap" id="mwCC4">22 May</span> 2020</span>.</cite><span about="#mwt112" class="Z3988" id="mwCC8" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Aircraft+of+the+Royal+Air+Force%2C+1918-57&amp;rft.pages=59&amp;rft.pub=Putnam&amp;rft.date=1957&amp;rft.aulast=Thetford&amp;rft.aufirst=Owen&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DHr4MAQAAIAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+14"></span></span>