My battle hardened character once in a D&D game wanted to tell a young aspiring knight in the king's castle the real truth of what it is like to actually fight in battle. No silly romanticism just the cold hard grisly truth. Not sparing him any of the graphic, bloody, gory details. Not sparing him the sounds of pain and cries of anguish that came out of my comrades and the enemy's mouths as they languished on the battlefield silently begging for a swift end. And how it is not really that glorious coming out of a battle. At most you get a thank you and a pat on the back.
But more importantly that archive nothing but a bunch of bloody cuts and such, and that is just being treated very gently in the heat of combat. Most of the time, deep gashes and torn and tattered flesh bleeding profusely and hurting like the devil! How I would come back with wounds so grisly and painful that a normal person would be shrieking uncontrollably in mortal agony if they had them.
But I decided to let him live in his fantasy world because I sometimes wish I believed those ideas were true too.