Sergei Eisenstein was 26 when he made his first feature film Strike, the first major film of the Montage movement. It was released in 1925. Potemkin, October, Old and New are three more important works from Eisenstein in that style. At the center of Sergei Eisenstein's concept of Montage was the collision of elements: shots should not be seen as linked, but rather as conflicting with one another. The spectator can create a new concept in her or his mind realising the conflict between elements.
Even today, the Soviet Montage style is very interesting to watch and very inspiring but the political aspects are much harder to follow today. The lack of individual protagonists is a factor that reduces the joy of viewing and makes it hard to follow the whole film. But one can get an idea how exciting it was to be part of the emergence of a new form of society.