There is a well known saying that goes like this: the bigger they are, the harder they fall. I doubt I have to explain the meaning but for argument's sake I will. You can see it from a physical perspective as a body with a large volume will contain a large amount of mass as well, and so when said body falls it will apply an equally large amount of force. There is the social context as well, for example a mistake made by a politician will be far more costly to their career than that made by a small time shop keeper.
Now my dear reader, you may be wondering what this has to do with a story involving the naruto franchise. Well this is precisely how the story starts. Arthur Pendragon was a soldier, a special ops soldier to be precise .I would like to point out that I said he was instead of is, why? simple, he is no more.
Now I would not bore you with how he died since I bet y'all want to know the power-ups he gets. In short, he died on a mission protecting bystanders who got involved in the cross fight with some terrorists. Arthur was a good soldier (R.I.P mate), Expert combatant, marksman and most of all a loyal soldier. Before becoming a soldier, he was an introvert who used to either go to gym or watch animes, read novels and mangas. He performed the duties of a soldier for 17 years and died at the age of 45.
Shinobi ranks :
Academic Students
Genin
Eternal Genin : Academic students who don't get a sensei after graduating
Chunin
Special Jonin : Speciality in one area like sensory or kenjutsu or Genjutsu but mediocre in rest
Jonin
Elite Jonin
Kage
All Anbus will atleast be elite chunin.