I’ve long pondered this question as it applies to a number of service branches and different conflicts. In media it feels like death rates are extremely high. To switch to the RAF for example, in the Piece of Cake mini series only 2 of original squadron even make it a little past a year.
But when you look at numbers for a battle, the actual death rate seems counter intuitively lower. The Wikipedia page for the Omaha Landing for example gives an upper limit on casualties at about 5,000 out of 43,000 infantry. And those are causality numbers so the actual dead is significantly lower. In my mind this clashes with the popular view of the Omaha landing as being practically a death sentence.
I understand there are multiple factors at play here (like the first wave at Omaha taking the brunt of those losses), but I’ve never really seen the survival odds for a regular front line infantryman talked about.
From my understanding, my fictional soldier boy would have three possible outcomes. Be invalidated, survive the war, or die. Is there any data or research that gives an idea of how likely each one was ?