Catch-22

So as I'm reading this book I'm noticing so many contradictions. Every character tells a story and in the next chapter says that didn't really happen. Or if a character is said or shown to always behave a certain way, then in the next paragraph they'll behave the completely opposite. What I'm thinking is that the author is trying to make fun of the fact that war is a contradiction. You'll taught your whole life not to kill and then your  awarded medals for killing people for your country. I believe the book is a satire because the author is taking the contradiction and confusion of war and is making fun of it by personifying those traits through the characters. When readers read the book and realize how ridiculous the characters are because of how they behave it's basically the authors way of saying war itself is ridiculous.