Would the Roman Army have traveled with surgeons, doctors, or some other type of healers during Caesar's campaigns in Gaul? How did the Roman Army treat non-fatal casualties and wounds during that time period?[58-50BCE]
I have an earlier answer that, while the question focused on illness, seems applicable to a lot of what you're asking (as far as healers, healing/convalescence time, etc). I hope this is somewhat useful!