the division was a mixed unit: its prussian elements, although designated upper alsatian, were mainly raised in the more densely populated rhine province and the province of westphalia, as the alsatian german population was insufficient to support all the units stationed there. the 126th infantry regiment was from the kingdom of württemberg. the 66th field artillery was from the grand duchy of baden. the 14th jäger battalion, attached on mobilization from the xiv army corps, was from the grand duchy of mecklenburg-schwerin.