There would be two UE behaviors. One would be triggered for orders with a shipping address in Germany, and the other for orders with a shipping address other than Germany. The column is OrderShipCountryID from the table orders. The ID in the column name is deceiving, it is the actual country and not a country number.
The reason why I need two different confirmation mails is, that German is also spoken in other European countries, but outside Germany we do not collect sales tax and the shipping cost is higher.
At this point it does not matter which language is chosen, because the language of the confirmation email is automatically filtered for the chosen language.
Please let me know, if you need any further info.