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So, of course, the British commemorate it with a Mk IV in Trafalgar Square.

The Mark IV tank, on which the replica is modelled, was first used in warfare in the Battle of the Somme on 15 September 1916.

With 57,000 casualties on the first day it is regarded as the bloodiest day in British military history.

The tank will be in position in the square until 11:00 BST.

And here’s 10 minutes of tanks from the 30th Armored Brigade Combat Team, North Carolina Army National Guard.