What exactly does it imply for a book to have an anti-war stance?

Books that feature anti-war themes either have anti-war messages that are presented in an overt or obvious manner or they have been characterized as having substantial anti-war themes or feelings. There isn't a direct connection between any of these novels and the various anti-war movements that have occurred. The list contains both works of fiction and nonfiction, as well as books appropriate for children and readers of a younger age. Books about War not only enlighten us about the reality that it is an inevitable facet of human history but also teach us that it is one of the most significant contributors to the formation of our identities as a species.