Dak
mentat
It's unique in terms of the legal paperwork. A soldier in the Middle East might lose his leg in a suicide bombing; others might return home without a scratch. A teacher in Chicago might get shot leaving her school; others might never get so much as a paper cut.
The difference is in red tape only, not in the kind of harm that people might actually suffer. That's the point, and that's what the glorification of the military does have a practical impact. It affects the way we institutionalize comparable consequences for different jobs.
You are conflating known danger with potential danger, and the ability to forecast tomorrow in a very limited local social arena with the ability to forecast four or more years of international diplomacy and technology. Furthermore conflating standing in front of a class with the physical toll of physical labors. Most service connected disability isn't from combat, it's lifting or carrying heavy objects for long periods of time and/or in awkward ways; exposure to loud noise/hard vibrations, toxic chemicals, etc.