What is the point of view of Catch-22?

The story is told in third person. Sometimes the narrative is omniscient ("all-knowing"), meaning that readers can see the large picture and everything that goes on. Sometimes, however, the narrator's vision is somewhat limited, we see things as if through a particular character's eyes. For example, the first several chapters are really from the point of view of Yossarian, but then in chapter nine we pull back and see the larger picture. This switching from limited to omniscient narration allows Heller to focus on the big picture or just one character.