WWII vs. Vietnam

Vietnam was a drastic war between North Vietnam and South Vietnam. Vonnegut sets the stage where this war is useless. He mocks it (page 135) by calling it a great war, but, in reality, it's not.

WWII was a long and dreadful war. Resulting in two atomic bombs exploding in Hiroshima and Nagasaki. Vonnegut, also, sets that this war is useless. WWII was just a war over territory and who has the most power.

All wars are useless. What is the point in fighting over territories or who has the most power? It's not relevant to fight over anything. Yes, leaders have their differences in oppinions, but that doesn't give reason to create a war over it.