You could have picked a better example to counter the OP. It was the ‘war machines’ of ‘death and misery’ that began and enabled a war of such scale, and it was

You could have picked a better example to counter the OP. It was the ‘war machines’ of ‘death and misery’ that began and enabled a war of such scale, and it was attrition (specifically Russian attrition) of soldiers and arms that brought it to a close.