This is, actually, an absurd opinion. Massive civilian casualties are inseparable from war, and you will be hard pressed to find a war without them.
The laws of war are built around, and exist because of, this assumption.
They exist to give a framework that sets forth principles by which the loss of life can be evaluated.
Otherwise, by your definition, every warring faction ever is a war criminal.
This is, actually, an absurd opinion. Massive civilian casualties are inseparable from war, and you will be hard pressed to find a war without them.
The laws of war are built around, and exist because of, this assumption. They exist to give a framework that sets forth principles by which the loss of life can be evaluated.
Otherwise, by your definition, every warring faction ever is a war criminal.