It looks like the Grizzly is now exclusive to the US army now. But, in the lore paragraphs for the Commonwealth army list, it’s explain that the US supplied their excess walkers to them and they decided to use them for research, as well as make their own unique walkers based off the US ones. The British do have them, but choosing not to deploy them. I don’t think it would be wrong to play a Grizzly in a Commonwealth list so long as the other player’s okay with it honestly.
