The tagline of Warfare, the latest film from Civil War filmmaker Alex Garlandand co-directed by real-life veteran Navy SEAL Ray Mendoza, reads as “Everything is based on memory.” That’s because Warfare isn’t your average adaptation of a true story. Instead of being adapted page-by-page from a book, the newest A24 feature is based almost entirely on first-hand accounts from actual U.S. veterans, including Mendoza himself.