This article examines the role of the intergenerational memory of the Second World War (WWII) in identity formation and political mobilization. An existing explanation in the ethnic-conflict literature is that strategic political leaders play a crucial role in constructing and mobilizing ethnic identities. However, based on 114 open-ended interviews with individuals born in Serbia, Bosnia and Herzegovina, and Croatia, conducted in Serbia during 2008–2011, nearly a third of the respondents make spontaneous references to WWII in their statements, usually drawing parallels between the cycle of violence in the 1990s and that in the 1940s. The question this article asks, then, is why some respondents make references to WWII spontaneously while others do not. It is argued that intergenerational narratives of past cycles of violence also constitute a process of identity formation, in addition to, or apart from, other processes of identity formation. The respondents mention WWII violence in the context of the 1990s events because they “recognize” elements, such as symbols, discourse or patterns of violence, similar to those in the intergenerational narratives and interpret them as warning signs. Hence, individuals who had previously been exposed to intergenerational narratives may be subsequently more susceptible to political mobilization efforts.