Not everywhere.
I remember intense descriptions of the death camps in primary school books (pictures of a bulldozer moving a pile of corps, detailed descriptions of murdering etc) but about war it always focused on the terror of the civilians (rape, killings, famine, becoming refugees), not the terror of the soldiers: flame throwers, the endless waiting, the fear of killing someone innocent, ambush, mine fields etc.
I think a whole lot of people think of war through the lens of the Battlefield series and CSGO where there is Valhalla style mechanic where you go out to fight every day, get slain and become alive to feast in the evening before starting the cycle anew next morning. Also there are no stench, no terrorized faces om
of friends or enemy fighters etc.
Real war is brutal on a whole different level than games.
Note: I'm not saying we shouldn't teach the horrors civilians face, just that I think people have extremely unrealistic views of what war is like. If anyone is in doubt: stay out of wars if you can avoid. And a very effective way is to 1.) train for war so you become a scary target 2.) don't start a war.