The large tank is from Ironclad, the small ones are from Ground Zero Games, but I think it is sold out there, so it is available from Eurika/Fighting 15s, and the small square shaped tank is homemade form cardboard and bits.
We had a great time showing this and with our experience from Horisont in Denmark we had simplified much and it became a faster and more funny game for the participants too (I think).
We played two games, both ended with (marginal) Prussian victory and both times Lord Cornwall failed to rescue his wife (I think)..
But I think there will be more adventures for Lord Cornwall in the future