As to the first question I asked - It is actually a DD tank, and starts the game with 0 land movement. This seems to be a data (scenario editing?) error.
There does not seem to be any explanatory text in the scenario description stating that these are meant to be immobile pillboxes for some reason.
- And anyhow as the DD tanks start
on the beach, then there is
no real point in having them that I can see other than "flavour" - if deployed in the sea, the alternative swimming DD tank icon is used until they land. But deployed on the beach, their "party trick" is not utilised unless maybe the payer decided to waddle out to sea for some strange reason
.