As I don't look in this area often – I was surprised to find that AK XIII was in the fifth Army. Divisional cavalry.
26. I.D.
Kdr.: Gen. Lt. Wilhelm, Herzog v. Urach, Graf von Württemberg
Ia: Maj. Wöllwarth
U. R. 20
51. Inf. Brig. (Gen. Maj. v. Stein): G. R. 119, I. R. 125
52. Inf. Brig. (Gen. Maj. v. Teichmann): I. R. 121, F. R. 122
26. Feld-Art. Brig. (Gen. Maj. v. Mohn): Feld-Art Rgt. 29, Feld-Art Rgt. 65
1./ Pi. Btl. 13
I actually have a very interesting book written by the division commander several years earlier. This puts things more in perspective. Thank you!