[@Terrans] Couple of small changes I would like to suggest, otherwise super!

You've spoken about 'scouting, patrolling, camouflage, infiltration and advanced marksmanship.'... change that to 'scouting, patrolling and marksmanship'.  Because camouflage is really in it's infancy as a concept - they know muted colours are helpful and trying to disguise artillery emplacements can help but that's about it.  Infiltration hasn't been invented yet (historically this is a response to the battlefield conditions of WWI... which is just kicking off in this world) and marksmanship is also pretty basic... that being said snipers do exist.  So all good with the general concept!

Can I also recommend you change the name of the 'Scout-Trackers' to an Alpine Regiment?  Just gives that early 20th century feel... and it fits with the terrain!