With regards to Mörser-Regimenter it appears that the Saxon Fußartillerie-Regiment Nr. 12 was also accorded this title. In the order of battle of the XVI. Armee-Korps as reproduced in "Die Schlacht bei Longwy", Mörser-Regiment 12 under Oberstleutnant Max Roeßler (II. & III. Bataillon) is shown as attached to the corps. The commander of II./FußAR 12, Major (later char. Oberst a.D. Max Blümner) wrote a book about his experiences as commander of a Mörser-Bataillon and this can be found as a digital copy here: http://digital.staatsbibliothek-berlin.de/werkansicht/?PPN=PPN71868642X Interestly, on page 5, the author notes that the General of Foot Artillery of the Metz Fortress pointed out that "it was the first time in the history of war that a horse drawn mortar regiment had deployed into the field" Major Blümner was awarded the Knight's Cross of the Saxon Order of Saint Heinrich on 11 January 1915 and his entry in the history of the award holders shows him as the Kommandeur of II. Batl. K.S. Mörser-Regiment 12. Regards Glenn