The Battle Cry of Peace is a 1915 American silent war film directed by Wilfrid North and J. Stuart Blackton, one of the founders of Vitagraph Company of America who also wrote the scenario.

The invasion comes, and New York, Washington, and other American cities are devastated and the enemies take over the country In the same year, J. Stuart Blackton published the book version of The Battle Cry of Peace with pictures from the film.

Former President Theodore Roosevelt was one of the film's staunchest supporters, and he persuaded Gen. Leonard Wood to lend Blackton an entire regiment of Marines to use as extras.

For example, the Pennsylvania State Board of Censors required a series of cuts which included the climatic scene in the third act where a mother murders her own daughters to prevent them from falling into the hands of officers of a foreign enemy.

The Pitt Theatre in Pittsburgh, rather than let the audience miss the lesson of the film, hired three young women to act out the excised scene, which the Board could not prevent as it cannot regulate stage productions.