A British Mark IV tank at Wailly. This shows how it would appear to occupants of the German trenches during the Battle of Cambrai. This was the first occasion on which tanks were launched en masse in a surprise attack and it clearly demonstrated the potential of the armoured vehicle - 21 October 1917
<bdi><a href="https://www.wikidata.org/wiki/Q29267899" class="extiw" title="d:Q29267899"><span title="photographer">John Warwick Brooke</span></a>
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Taken on 21 October 1917
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<td>This photograph <a rel="nofollow" class="external text" href="https://www.iwm.org.uk/collections/search?query=Q+6284">Q 6284</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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