Actually I get it now. I can select that option in the enemy army list.

Thank you rbodleyscott & Paul59.

Thanks guys.

It is so weird. I don't have that option. Is there a DLC I am missing?

Hi there, Apologies for sounding a bit dumb but I've noticed that I cannot play against certain nations/armies in custom battle. Despite choosing the correct time period, I can only play against nations/armies which seem to historically correlate to each other. For example: If I choose to play as th...