Question

Which of the following was NOT a change in the rules of warfare?

The use of artillery guns from a great distance.

The use of chemical weapons.

The sneak attacks of the German U-Boats.

The Calvary charge with horses and swords.

Answer 1

The use of artillery guns from a great distance.

Step-by-step explanation:

I think it's The use of artillery guns from a great distance because all the others that are stated below The use of artillery guns from a great distance are either war crimes or the rules of war-fare was changed because of them.