The military has far less taste for human butchery than civilians.
The name of John Turchin is probably not all that well known, but he was court martialed over actions in Athens, Alabama and removed from service. Secretary of War Stanton then made him brigadier general, which outranked those who convicted him, and returned to service. When Sherman later did pretty much the same thing, no one batted an eye. What people have a taste for can rapidly change, particularly in a situation like a great-great-grandfather was in, when he "...drank water than men and horses had bleed and died in and was glad to get it." IIRC, he also observed "People got meaner and meaner" as the American Civil War progressed.
It's not a matter of a taste for butchery; it's a matter of what is. Like a friend who, when he arrived in Vietnam, wondered if he could actually kill someone, then that night, while on guard duty, moved from his position just before an artillery round struck where he'd been standing and that changed his opinion. Or an uncle in the Pacific who, was saying along with his friends what he would do when he saw a Japanese soldier only for the tall grass in front of them to part and there stand an unarmed Japanese soldiers carrying canteens, and not a one pulled the trigger, allowing him to slowly bow and back away. That changed at some point as he was crawling under Japanese and US shells flying overhead. And there were other stories that perhaps are not for the squeamish.
You, no doubt, have certainly have heard far more than me, and since I was unable to serve due to a physical condition (according to the MEPS), have absolutely seen more than I have. My point is more in line of only those who've been there really know, and those of us who've listened to them for most of our lives and who realize that what they told us was often sanitized at least have an inkling that some ideas of combat are, well, naive. Sort of like the civilians in an incident in the American Civil War who came out to watch a battle as though they were watching a game, only to be overrun as the battle progressed, And I'm reminded that an uncle who was at D-Day never discussed it, and I only knew about it from an aunt, who said he had nightmares about it, and that was over forty years later.
Right now, Vannevar Bush came to mind. He had done work on the incendiary bomb used by the US in WWII and is said to have awaken screaming because he "burned Tokyo." And yet Tokyo still burned. And that is war.