You think its a troll topic to say the sinking of a civilian refugee vessel carrying an entire population is a war crime? So what are you saying? That is not a war crime to sink a civilian vessel full of refugees? Is that your official stance here?
The alliance cannot be guilty of war crimes because they are the protagonist of the story. The horde is inherently a war crime because they are the antagonists of the story.
One Genocide against an Enemy Nation’s Civilians to send Souls to the Maw to be forged into weapons or Mawsworn as well as empower Sylvanas so that she can beat Bolvar and another Genocide against a Neutral Party(at the time)'s Civilians to remove Witnesses to a High Profile Arrest…
One was Hot-Bloodedly made on the spur of the moment and the other was Cold-Bloodedly(which is even worse) attempted without a thought.