Alsace-Lorraine is a Province of France located on the German border near Freiburg.
Cities include Strasbourg and Metz, which are German names. In fact, since the fall of the Roman Empire, the region has traded back and forth between France and Germany, with it being part of France for 3/4 of the last 2 centuries (German from 1871 to 1918, independent in 1918, for a short period, German again form 1940-45).
The region's German name is Reichsland Elsaß-Lothringen