The relationship between citizenship and military service has been fundamental to republican traditions, where national identity is often forged through armed service and defense of the homeland. This connection becomes particularly pronounced during military conflict when nations strengthen their internal cohesion while reinforcing boundaries against outsiders. In such contexts, ambiguous social categories are frequently viewed as threats to national unity. This chapter examines the military-citizenship nexus in Israel through four critical lenses: immigration and naturalization policies, attitudes toward minorities, dual citizenship regulations, and expatriation procedures. It argues that the bond between military service and citizenship in Israel is steadfast and operates on both practical and symbolic levels, manifesting in several key ways: Naturalization schemes give preference to soldiers, military service is constantly an excuse to marginalize non-Jewish minorities, dual citizenship is prohibited with enemy states, and citizenship revocation specifically targets non-Jewish terrorists. The significance of these citizenship policies extends beyond mere functional considerations, carrying profound symbolic weight. Hence, these policies are shaped more by broader perceptions of national threat than by specific, objective security conditions.