Yes RDG, appreciation is often a scarcely afforded commodity in our times, but nonetheless, we do what we do
I think that what always keeps me charged up is the tremendous satisfaction of discovering things and always hoping others will add to the trove. That doesnt happen as much as I would like to see, but there are some out there with the same passion.
Regarding the plight of the records, it seems that is a well known dilemma and so much has been destroyed by war and disaster. One thing I think of as an alternate resource in your case might be the National Army Museum in London. Some years ago, and in quite a number of cases, these folks were wonderfully helpful, and I was truly amazed at the volume of material they have compiled. While official records from one source may have been lost, the donations from private individuals seem to have often ended up here rather than the specialized museums.
Once cleaned and stabilized, and along with some photos and display graphics, I think these will offer a great representation of this event in the units history.
It is pretty hard to make out much from these images, and I am not computer savvy enough to use all the cropping, brightening features, but this too looks like the very much standard kaskara of the period. The drawing you added seems to stall each time I try to display it, and it would be great to determine more on the blade if I could see it.