Take the other fighting lines and there must already be a total of 2,000,000 killed.

Nothing like that has ever happened before in the history of the world.

A flood or a fire or a wreck which has killed 500 has often shocked all mankind.

Yet we know of this enormous slaughter and (in a way) are not greatly moved.

I don't know of a better measure of the brutalizing effect of war--it's bringing us to take a new and more inhuman standard to measure events by.
As for any political or economic reckoning--that's beyond any man's ability yet.