<i>The Royal Navy during the Second World War</i><br>
The group plot with main plot in the background in the operations room, Derby House, Liverpool, three Wrens can be seen at work. All escort groups and the areas they cover are shown here. It was in this room that the Battle of the Atlantic was planned throughout the Second World War.
<bdi><a href="https://www.wikidata.org/wiki/Q110967291" class="extiw" title="d:Q110967291"><span title="official war photographer of the Royal Navy">Claude Henry Parnall</span></a>
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between 1939 and 1945 <div style="display: none;">date QS:P,+1950-00-00T00:00:00Z/7,P1319,+1939-00-00T00:00:00Z/9,P1326,+1945-00-00T00:00:00Z/9</div>
<p><a rel="nofollow" class="external free" href="http://media.iwm.org.uk/iwm/mediaLib//31/media-31116/large.jpg">http://media.iwm.org.uk/iwm/mediaLib//31/media-31116/large.jpg</a>
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<table style="width:100%; border:1px solid black; background:#E0E0E0; padding:0; text-align:center;"><tbody><tr><td align="left"><img alt="IWMLondonThumbnail.jpg" src="https://upload.wikimedia.org/wikipedia/commons/c/c3/IWMLondonThumbnail.jpg" decoding="async" width="80" height="54" data-file-width="80" data-file-height="54"></td>
<td>This photograph <a rel="nofollow" class="external text" href="https://www.iwm.org.uk/collections/item/object/205187556">A 28353</a> comes from the collections of the <a rel="nofollow" class="external text" href="https://www.iwm.org.uk/">Imperial War Museums</a>.
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<td align="right"><img alt="Flag of the United Kingdom (3-5).svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Flag_of_the_United_Kingdom_%283-5%29.svg/80px-Flag_of_the_United_Kingdom_%283-5%29.svg.png" decoding="async" width="80" height="48" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Flag_of_the_United_Kingdom_%283-5%29.svg/120px-Flag_of_the_United_Kingdom_%283-5%29.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Flag_of_the_United_Kingdom_%283-5%29.svg/160px-Flag_of_the_United_Kingdom_%283-5%29.svg.png 2x" data-file-width="177" data-file-height="106"></td></tr></tbody></table></div>