I'll join you in the "limited knowledge" side of the room Brian, but you can prefix mine with a "decidedly"" if you don't mind.
That said, I don't mind sticking my neck out occasionally, especially when I have the luxury of being able to delete any off beam comments.
The younger brother is a volunteer medical orderly (Freiwilligen Krankenpflege), perhaps too young to join his older brother in his Garde / Lieb (?) regiment.