I agree with a lot of your points although I am no expert on Nolan's films. I have seen the ones you mention but prefer this one and Interstellar to the others.
Totally agree about random and unpredictable artillery. Most of my dad's platoon died from "friendly" artillery. I think often with artillery, the troops of either side were not even part of the equation.
I'm not sure about people being killed at a distance. I suppose that stacks up as being the majority of the casualties, but I think it may depend on the war and the location. My dad remembered the face of the man who shot him and believed he killed him in return. He credits the guys who got him off the mountain he was on for retrieving him before the Japanese could bayonet him, which is what they did to the injured enemy. He spent a lot of time in jungle combat, which was often hand to hand. I have no idea what the numbers were for casualties, but in places like Guadalcanal and New Guinea, starvation, malaria, dengue, hepatitis, and dysentery took a toll. I think WW II may have been the first war where the enemy killed more than disease, but I am not sure what the numbers would be if you looked only at the war in the Pacific. This movie quietly did a nice job of conveying hunger and thirst.
There has been quite a bit of buzz about Tom Hardy and his faceless roles, so was expecting him. What a job he did.
I do not remember the exact quote, but Dan Carlin's Great War series discussed a British general saying something like this about the men in the trenches...
"The men are brave. They are not afraid to die for their country. What they are afraid of is pain, mutilation, and dismemberment -- being wounded by or blown partially or completely to pieces by the German guns, or left to die in No Man's Land with their guts hanging out or an arm and a leg missing." Dunkirk gave some small hint of that, and it was bad enough.
That is terrifying. Not only would artillery of such nature be impossible to predict and defend yourself from, but its likely effects... wounds from flying shrapnel, dismemberment, or being vaporized entirely by a direct hit... kind of leaves a lump in my stomach. No seeing it coming -- just BOOM and it is all over very quickly, if you are lucky, or you bleed to death or lose a few limbs if not. I can only imagine what battles like Verdun were like and, while the World War has a reputation more for tanks and aircraft, artillery stilled played a huge and determining factor in the land campaigns, and it was no less terrifying in 1944 than it was in 1916.
I have heard the same statistic you give about various "crowd diseases" being more deadly than the battle itself at various points. I think I heard it as something like the American Civil War was the point where the "lines crossed" between the two. All my respect to somebody who fought in the New Guinea campaign or on Guadalcanal -- small confrontations in terms of the number of men actually involved compared to the Eastern Front, but in some of the most inhospitable conditions on the planet already without another side trying to kill you.