This was an event in Vonnegut's own life, and the novel is
considered semi-autobiographical. from his time as an American soldier and
chaplain's assistant, to post war and early years. It is generally recognized
as Vonnegut's most influential and popular work.
Answer:
The desire to fight for power is an instinct.
Explanation: This is the answer because he is killing many things for not very good reasons. Therefore he is just killing for power.