The writing on the photo of the German looks like 'Barglas BSA' I can't find the name (either christian name or surname) in various lists of German names..and it's not a German word.
Is he a German or one of the many other nationalities that served in the German Army...any suggestions?...Ian
Looking at the light downward strokes, I don't think that those are lower case 'a's, I reckon 'e's - It looks to me to be an attempt by someone brought up writing in Sütterlin script to write clearly on a photograph.
It starts to make sense then as Bergles is the Germanic spelling of the Sudetenland town now known as Brazec in the modern day Czech Republic.