<i>Royal Air Force Bomber Command, 1939-1941.</i><br>
The crew of Boeing Fortress Mark I, 'WP-G' of No. 90 Squadron RAF, climb out of their aircraft at Polebrook, Northamptonshire, after a daylight attack on the German battlecruiser GNEISENAU docked at Brest, France, which they bombed from 30,000 feet.  The crews of the three Fortresses involved found that the Sperry Model 'O' bombsight, with which the Fortresses were equipped, was too inaccurate at that height, and that the Wright Cyclone engines had difficulty in maintaining such an altitude.
Royal Air Force official photographer, Woodbine G (Mr)
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//53/media-53057/large.jpg">http://media.iwm.org.uk/iwm/mediaLib//53/media-53057/large.jpg</a>
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<td>This photograph <a rel="nofollow" class="external text" href="https://www.iwm.org.uk/collections/item/object/205210089">CH 3121</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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