You can watch the movie Warfare through several options:

• Digital Purchase or Rental: It is available to buy or rent digitally on platforms such as Amazon Video, Apple TV, Fandango at Home, Prime Video, Spectrum On Demand, Plex, and YouTube. Rental prices are around $19.99 and purchase prices about $24.99

• Theaters: Warfare is still showing in some theaters as of May 2025, so you can watch it on the big screen

• Upcoming Streaming: Although Warfare is not currently streaming on subscription platforms, it is expected to become available on Max (formerly HBO Max) a few months after its theatrical release, likely by mid to late 2025 due to A24's streaming deal with Warner Bros. Discovery

• Physical Copies: 4K Ultra HD and Blu-ray editions are available for pre-order with bonus features, shipping expected in summer 2025

In summary, for immediate viewing, renting or buying digitally or watching in theaters is your best option. For subscription streaming, look for it on Max later in 2025.