Further info:
WW I to WW II:
http://www.ramcjournal.com/2002/sep02/tailpiece.pdf
It seems we got it pretty much spot on, and the Finnish system was not that different from the British system:
- Advanced Dressing Station
- Main Dressing Station / Emergency Operating Centre / Mobile Surgical Team
- Advanced Operating Centre
- Mobile Hospital
...or the later ADS - FDS / FSU - CCS.
I believe it is the evacuation logistics we should try to recreate, where each node would have an affect to recover from disrupt status, to imitate the evacuation of wounded.
WW II to Present:
http://www.ramcjournal.com/2003/mar03/bricknell2.pdf
There's some food for thought for CWE timeframe too.