I remember playing Call of Duty 2 on veteran and having multiple instances where surviving some impossible situation made me respect the people fighting even more.
There's an ambush in the desert that I barely made it through after a dozen attempts. I thought, "Christ, I can't even imagine dealing with that in real life." Same with the D-Day landing. I'm running through a battlefield getting frustrated with my frequent deaths, and I thought about the fact that a soldier would be running through something infinitely worse without overly effective smoke grenades.
I thought Call of Duty 3 did a lot of stuff like that, too. Before CoD 4 started the turn of that franchise towards over the top blockbusters.
Anyway, I'm glad the developer got a chance to do this. Handled it with class.