Landships II

As well as I believe it being proven quite easily that this Mk IV is not 'Britannia', the rest of the description is quite a mean feat for a Mk IV seeming as they weren't used at Arras:

"Mark IV Female Liberty: stored at Anniston Army Depot, Anniston, Alabama. Originally named Britannia, this tank took part in the Battle of Arras where it penetrated the German trench lines, destroyed four machine gun positions, helped take 395 prisoners and repulse two German counter-attacks. The tank and her crew were afterwards sent to the US to help sell War bonds. Renamed Liberty, the tank joined the Ordnance Museum collection in 1919. After decades of exposure to the elements it is in poor condition, but about to undergo restoration"