e_ref-10" class="reference"><a href="#cite_note-10"><span>[</span>10<span>]</span></a></sup> On 1 September 1939, as the Second World War heated up, he was still ranked as Flight Lieutenant but had been moved up to the <a href="//en.wikipedia.org/wiki/Royal_Air_Force_Volunteer_Reserve" title="Royal Air Force Volunteer Reserve">Royal Air Force Volunteer Reserve</a>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span>[</span>11<span>]</span></a></sup> One December 1941 saw him promoted to te