"Strategy." . . . . "Canadian Government Motion Picture Bureau," . . "World War (1939-1945)" . . . "Military research Canada." . . "World War, 1939-1945 Science." . . "1939 - 1945" . . "The battle of brains" . . "Short films" . "Short films"@en . . "Nonfiction films" . "Nonfiction films"@en . . . . . "\"This film illustrates the difference between World War II and the war of 1914, emphasizing the importance of mechanization, and contrasting the mobile tactics with the immobility of trench warfare. The scientific approach, both to problems of military strategy and to new weapons, is all-important. The film shows some of the work done by Canadian scientists to make these weapons as effective as possible.\"--National Film Board of Canada description." . "\"This film illustrates the difference between World War II and the war of 1914, emphasizing the importance of mechanization, and contrasting the mobile tactics with the immobility of trench warfare. The scientific approach, both to problems of military strategy and to new weapons, is all-important. The film shows some of the work done by Canadian scientists to make these weapons as effective as possible.\"--National Film Board of Canada description."@en . "Sponsored films"@en . "Sponsored films" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The battle of brains"@en . "Columbia Pictures of Canada," . . "Science." . . "1914 - 1945" . . "Equipment and supplies." . . "Canada." . . "Military research." . . "World War, 1939-1945 Equipment and supplies." . . "National Film Board of Canada," . .