After nearly two and a half years of war, it is unclear how many Ukrainian soldiers have been killed or injured. However, the limited data released suggests it's well into the tens of thousands.CBC News recently gained access to a medical evacuation bus transporting injured soldiers from the front line to a hospital in Dnipro Oblast in Eastern Ukraine.The 25 patients evacuated on the volunteer-run bus included men who had been conscripted under the new mobilization law and were sent to the front