Is the war for the people, or for the bigotry of the dictator?
Do people want war? Or do some kings wage war to spread their dominance?
In fact, most people want peace. But the king wants war because of the expansion of his empire, the expansion of domination, the increase of power, etc. The king waged war in his own interest and penetrated the people to take part in that war. The bloody war began. The king sees war from a safe haven and the army fights, the people die.
At last the war is over, (the king wins but the people lose their lives)
This is the tragic consequence of most wars.
The title of your post says it all