In Postmodernist literature, writers often approach quite serious matters, such as the war in this case. In order to maintain a position of distance and be able to disconnect, they will usually describe their histories using irony, as well as playfulness and black humor.
Kurt Vonnegut's short story "Report on the Barnhouse Effect'' is an example of a postmodernism literature in a way that he used it to spark some interest on self-consciousness and criticism on topics such as history, philosophy, politics and plenty others. However, he used a language that is used by everyday people and one that can relate to many in order to convey postmodernism.