Where to watch Why We Fight: The Battle of China (1944)
In US, Why We Fight: The Battle of China is streaming on Amazon Prime Video, MGM+ Amazon Channel, MGM Plus Roku Premium Channel, MGM Plus, GuideDoc, FlixFling, Amazon Prime Video with Ads, DocuramaFilms Amazon Channel.
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| Country | Stream (subscription) | Free | Free with ads | Rent | Buy |
|---|---|---|---|---|---|
| US |  Amazon Prime Video  MGM+ Amazon Channel  MGM Plus Roku Premium Channel  MGM Plus  GuideDoc  FlixFling  Amazon Prime Video with Ads  DocuramaFilms Amazon Channel |  Kanopy  Hoopla  Fawesome |  Plex  Plex Channel  Cineverse |  Amazon Video FlixFling | Amazon Video FlixFling |
| GB | GuideDoc | — | — | Amazon Video | Amazon Video |
| CA | FlixFling GuideDoc | Hoopla | Cineverse | FlixFling | FlixFling |
| BR |  Looke  Oldflix | — |  NetMovies | — | — |
| DE | GuideDoc | — | — | — | — |
| ES | GuideDoc | — | — | — | — |
| IE | GuideDoc | — | — | — | — |
Availability data via JustWatch through TMDB. Listings change often — last refreshed 9 Oct 2026.