He was frightened.
He wanted the other soldier to "go away - just evaporate."
He said that the elderly man had an evil eye. That was his reason.
The reason he keeps writing war stories is because he killed an enemy soldier.
The mafia, Cuba Crisis, Vietnam war, there are many reasons, and many conspiracy theories, the answer is somewhere out there!!
To defend South Vietnam from the oppression of the Communist North Vietnam.
Pat does not want to marry the narrator because the narrator is a computer and Pat is a human.
The split occurred in 1954, and was part of the reason for the war.
The narrator fears the neighbors will hear the beating of the old man's heart.
The first reason sea creatures are killed off is the same reason land creatures are killed off; if they were not killed off, the world would be overrun with them. Food is another reason sea creatures are killed. Life is largely about eating and not getting eaten. Most creatures are killed as a food source. Pollution is another reason sea creatures are killed.
Part of the cold war.
They feared that Vietnam would become Communist if it should gain indepedence.
The NUMBER ONE reason for protesting the war was THEY DIDN'T WANT TO GO TO VIETNAM (THE DRAFT!).