From Alexander Nevsky (1938). The music matches the rhythm of the montage. Eisenstein used montage to heighten tension and create action that would otherwise be impossible to film.
The film depicts the attempted invasion of Novgorod in the 13th century by Teutonic Knights of the Holy Roman Empire and their defeat by the Russian people, led by Prince Alexander, known popularly as Alexander Nevsky.
In this scene, Nevsky rallies the common people of Novgorod in a decisive battle of the ice on frozen Lake Chudskoe.