Catch 22 Connections Between Textbook and Novel

There are many differences between the novel Catch 22 and the textbook that i read. I was very interested once again to see the connection the novel made to a single person, rather than the big picture. The big picture around WW2 is mainly focused around the Nazi regime, rather than the soldiers that were involved. Most of the story is based around true events, even though most of the events didn't actually happen.