This article examines the role of national identity in sacred defense. First, the article suggest that differentiation between Islamic revolutions discourse and imposed war is seen less actual in examination of national identity and, conversely there is a strong connection between them The author While Looking at identity changes in history of Iran, refers also to "Legitimacy Crisis" in nationalistic concepts to analyze national identity in War discourse. By Considering these concepts, main discusses of The article are regulated in two Parts including bases of national identity in war and its influence on Warfare treatments. In Part one, religious, revolutionary, and national doctrines are considered as the constructive bases of national identity in Sacred defense. In Part two, also analyzes five components of national identity, unsurrendability, and Justice- Center approach domination of Islamic Truth System, mobilization and national integration and Finally, Spirituality and national Morale For Considering the role national identity guide lines on Warfare treatments.