Well now a swan wants his own piece of history. Not 4 tanks though, just an East Coast train at Peterborough. 
John Gelson, spokesman for East Coast Trains, said: "The swan sat on the track in front of the train then it moved away to another track where it delayed another couple of trains."After 40 minutes it was captured by Network Rail staff and thankfully it did not cause a major delay. The good news is the swan was not hurt in any way in this highly unusual incident.