Recent Second World War historiography has rightly highlighted the forgotten contributions of South Asia in the Allied war effort, and the everyday meanings of the war in South Asia. The role of cinema here, however, remains largely overlooked. This article focuses on British efforts to produce war propaganda in India with the help of Indian filmmakers, through varying tactics of incentivization and coercion. Between 1940 and 1945, the British colonial administration attempted several strategies to build a local film propaganda apparatus in India but, as I demonstrate, each stage was met with differentiated forms of cooperation, reluctance, and outright refusal, finally leading to the adoption of the unlikely genre of the full-length fiction film as the main mode of war propaganda in India. Derided as frivolous and half-hearted by critics at the time, the Indian-language ‘war effort’ film is more generatively framed as a form of ‘useless cinema’ that defied the logics of propaganda and privileged ideological ambivalence. This article brings together media history, film analysis, industrial debates about supply chains and licence regimes, aesthetic concerns about subtlety, and political differences about the ideological meanings of the war to situate the Second World War within the complex cine-ecologies of India. I read films and film industrial negotiations together to add to the multi-sited story of India’s experience of the Second World War that this special issue develops.