Montage is the technique by which separate pieces of film are selected, edited, and then pieced together to make a new section of film. A scene could show a man going into battle, with flashbacks to his youth and to his home-life and with added special effects, placed into the film after filming is complete. As these were all filmed separately, and perhaps with different actors, the final version is called a montage. Directors developed a theory of montage, beginning with Eisenstein and the complex juxtaposition of images in his film Battleship Potemkin. Incorporation of musical and visual counterpoint, and scene development through mise en scene, editing, and effects has le
d to more complex techniques comparable to those used in opera and ballet.