Mrs. Miniver (character) President Franklin D. Roosevelt credited it for hastening America's involvement in the war. Winston Churchill is said to have claimed that it had done more for the Allied cause than a flotilla of battleships. Churchill is further quoted by Bernard Wasserstein in his book, "Barbarism and Civilization," as saying that the book (and later the film) was worth "six divisions of war effort." In 1942, when the film came out, Roosevelt ordered it rushed to theaters. The film adaptation of "Mrs. Miniver" was produced by MGM in 1942 with Greer Garson in the leading role and William Wyler directing. Under
Louis B. Mayer the top box office hit of 1942. President Franklin D. Roosevelt and British Prime Minister Winston Churchill both loved the film, said historian Emily Yellin, and Roosevelt wanted prints rushed to theaters nationwide. The Voice of America radio network broadcast the minister's speech from the film, magazines reprinted it, and it was copied onto leaflets and dropped over German-occupied countries. Churchill sent Mayer a telegram claiming that ""Mrs. Miniver" is propaganda worth 100 battleships." Bosley Crowther (1960 biographer of Mayer, below), wrote in his "New York Times" review that "Mrs. Miniver" was the finest film yet made about the war,