KG Luckner

[JasonC]

It is a longshot, but there was a colonel von Luckner at the time, later a major general, who was the commander of the 175th artillery regiment, which was the divisional artillery regiment of the 75th infantry division. That suggests more of an Arko than a KG, however. It isn't all that uncommon a name, though, so it might be something else altother. YMMV.