Don't get confused now, originally my query was about why were exclusively military terms being adopted into other employments. They never were "standard" as you claim. Next we'll have a "triaging expert" for hardware and software faults, an entirely meaningless concept just as it is for people outside of a warzone.
As for the 10 and 12 hour shifts, health workers lobbied long and hard via their unions to have those shift patterns introduced in order to reduce child-care costs as well as travel costs and time. No sooner had they been introduced, than those self-same workers were complaining about the length of their shifts and the hardships they created for them. Whinge, whinge, whinge, it never ends.