That tank memorial is on the Tritton Road roundabout BTW https://www.visitlincoln.com/things-to-do/lincoln-tank-memorial https://www.google.co.uk/maps/place/Lincoln+Tank+Memorial/@53.2264848,-0.5522219,17z/data=!4m5!3m4!1s0x0:0xe8b8f6be02acdfa6!8m2!3d53.2264671!4d-0.5499474 and you can see another one of those tanks at the local museum. Entry is free. https://www.lincolnshire.gov.uk/heritage-and-tourism/museum-of-lincolnshire-life/