As Gene Describes the war he says that he never killed anyone, hated his enemy etc. Why does he contradict himself? Who is his real enemy?

As the book comes to a close, Gene describes the war and the way he feels about his highschool experience. Gene believes that the war he fought, in his life, ended before he ever put on a uniform. The war to find himself and defeat his enemy (The subtle jealousy and hatred for finny) took place long before he was holding a gun (Pg.204) He claims that he killed his enemy. It is clear that Finny is dead. From what gene tends to imply his "enemy" died with Finny. It is not completley clear exactly what his enemy was however. Possibilities for this mystery could be the jealousy, the part of him connected to finny, the guilt, or others. Of course, every problem relates to Finny.

When one observes this book it is clear that it is not based on Gene and Finny's friendship. More clearly and precisley it is based on Gene and the effect their friendship has on him. Hence the narrator roles and the outcome. As soon as Finny died, Gene went to war, the thing Finny said didn't exist became reality for Gene as soon as Finny was dead. This makes sense because they are connected; Gene was a part of Finny. Its all ironic because Genes real enemy was himself but Finny had to die for it. The PURE part of Gene had to die for him to go to war and live his life. Its funny simply because he tells the truth when he says that he "didn't kill anybody" because he didn't; Finny was only a part of him.

Why else is it ironic? How does the way Gene reacts to Finny's death, prove the previously stated point?