This website has two H's in it, by the way. I do not use it, but I stumbled on these nice images, especially of the officer's field cap, which is very rare.
I remember the field cap very well, it appeared on the other site a few years back minus it's adornments. (I thought it was on Regimentals website, no?)
The black cap is one I haven't seen before.
The insignia appears to be grounddug's.
Thanks F.B. for bring these to our attention and adding to the depth of knowledge base on this site. It's always a pleasure to see such interesting, authentic material from wherever it may be found. Regards, paul
I never tire of seeing that beautiful cap FB, the shade of feldgrau Trikot is different to any other I've encountered or it could just be the lighting in the photo.