Let's be real here, belief in God is not going to be used for contrition over this sort of thing.
I am being real, the European nations did not emerge from the Great War as optimistic as the US - and I don't believe the US even lacks in this same sentiment or monuments
It is only a motivator. "God blessed our fight but it wasn't enough" doesn't really make sense, but it is how people think about these things.
A proverb that pops up from the Parliamentarians in the English Civil war was that God grants death and misfortune strikes your friends as readily as it does your foes. While still learning that Americans are real, it's surely not the case that all Americans think this one way? I have certainly seen Americans in the UK who did not think America fuck yeah 24/7
Contrition is not a functional political emotion in most instances. You've got situations like post-Nazi Germany, that's about it.
Have you ever been to the UK during remembrance day
Used to be that praying for the dead was a thing that didn't happen, a practice that died alongside the decline of English Catholicism. The logic was that a dead soul's already seen last judgement, so they're either in heaven or hell and there's not much else you can do about that. Then comes along the Great War, the war to end all wars, and the scale of death is such that the whole nation builds their own shrines, memorials and national observances, people saying goodbye where they couldn't in life. That the war to end all wars ended up just being part I... I just can't imagine someone using Remembrance Sunday in any other way than respecting the fallen
Even if you can interpret it otherwise, that interpretation exists.
If we destroy our own memorials because someone had a subjective interpretation nothing we have will survive post-modernism
Besides, Murricans don't do "monument in tribute of sombre death".
We do monuments of "kicking ass and taking names".
And monuments of "we woulda won if the politicians hadn't tied our hands behind our backs".
Jokes aside, the USA has its triumph monuments but it also has its sombre ones, like your tomb of the unknowns
EDIT: Which takes us back to the Confederate memorials. There are far too many people for whom these aren't commemorations of a tragic loss of life, they're commemorations of "We shoulda won".
Of "Our cause was just".
Of "The South Shall Rise Again".
So this is an attempt to defeat confederate nostalgia by destroying their memorials? Surely it would simply be preferable to build them schools instead?
This is the logic that would destroy mosques and tombs to defeat Caliphate nostalgia. I am certain it is not an effective strategy, liable to make generations of salty well-armed zealots at great cost to human history