O'Brien writes about why men go to war and endure. What reason does he give?

We can consider that according to O'brein, men go to war with fear and bring shame to their families, but they resist going to war it is a conflict that they are not to blame and it is not fair that their lives are interrupted on account from that.

Explanation:

I believe your question is about "On the Rain River" where O'brien talks about how he tried to escape the call for war in Vietnam. In this narrative, O'brien reports all the mental confusion he was subjected to during the war, as he did not want to go, he thought he was too good for that, he had plans that he would not postpone and did not believe that he had reason to war, although he agreed with the war on some points. For this reason, he resisted the call for enlistment, but he was afraid that his family would be embarrassed and that he would be the reason for gossip in the neighborhood, which was the only reason that motivated him to go to war.

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