Yes! That's precisely what I was thinking. I can see the color difference on the hands of the slain. Very realistic scene you've done here and I recognize many of the figures, several of the same are on my painting desk in front of me. Would those be Black Watch Highlanders (James old unit)? I'm sure you are familiar with the various sets underway by Francesco of the French medical corps. Lots of bits and bobs like medical instruments I would be curious to know where they came from. Thank you for posting this, it's very instructional and captures nicely the chaos of a field hospital.
Cheers,
Bessiere