It is very important to research the relation between civil engineering history and the military. The purpose of this article is to consider and clarify the effect on urban formation by the establishment of division. This case is the transition of Zentsuji City and Army's 11th division. The methods are historical materials collection and interview about Zentsuji City and Army's 11th Division. The summary of the result is: 1) The modern urbanization of Zentsuji was advanced by the militaristic thought. 2) Zentsuji city formed the original society system by the change of space and industrial structure by the establishment of division. 3) A part of inhabitant became a victim of the militaristic urban formation.