John these are some rough notes covering the history of the 21 Bavarian Division, that I made many years ago. From “Histories of 251 Divisions of the German Army that Participated in the War 1914-1918" page 120-122.
Part of the Bayr.III Corps District, 6th Army at the start of WWI
Part of the 5. Bayr. D. 1914-1918
1914 Lorraine, Oron, Lusy , Fremery, Sanon, August 25 Serres, Hoeville, Attacked Nancy by Way of Champenoux
1914 Woevre, Nonsard Sept 20, Heudicourt Sept 21,( Cotes De Meuse), Walking along the Summit, Forest of Apremont
1915 Champagne Oct. Tahure
1915 Woevre
1916 Artois until the end of August
1917 Artois
1917 Belgium Brasschaet training camp July
1917 Flanders, St. Julien, east of Ypres suffered heavy losses in the fighting of August 15
1918 Battle of Picardy, March- April
1918 Battle of the Soome, Lihons August 10 heavy losses,
First Class division
John
I added your 1908 at the top.
* 1908 DWM, s/n 2001b, B.21.R.1.1.- (Bayerisches, 21 Infanterie-Regiment, 1 Kompagnie, Waffe Nr. 1)
* 1915 DWM, s/n 5486c: Bay.21.J.R.2.K.23. - (Bayerisches, 21 Infanterie-Regiment, 2 Kompagnie, Waffe Nr. 23)
* 1915 DWM, s/n 1435d : Bay.21.J.R.10.K.21. - (Bayerisches, 21 Infanterie-Regiment,10 Kompagnie, Waffe Nr. 21)
* 1911 DWM, s/n 22xxe : Bay .21.J.R..M.G. - (Bayerisches, 21 Infanterie-Regiment, Maschinengewehr-Kompagnie)
# 1916 DWM, s/n 4917e : Bay.21 J.R.M.G. - (Bayerisches, 21 Infanterie-Regiment, Maschinengewehr-Kompagnie)
* 1916 DWM, s/n 9984: Bay.21.R.M.G. - (Bayerisches 21Infanterie-Regiment , Maschinengewehr-Kompagnie)