How new states dealt with minority populations and developed (or failed to develop) strong and secure government institutions are significant research areas in the history of states born in the aftermath of the First World War. This article examines how Irish First World War veterans served as transitional figures during the state-building phase of the Irish Free State in the 1920s and 1930s. Though they are often presented as categorically maligned or forgotten victims of a period of rising nationalism, this article argues that the ex-servicemen, despite the imperial legacies they represented, were popularly supported during the 1920s and early 1930s, and even served as vehicles through which the Free State cemented its stability and defined its independence and obligations in the international and domestic arenas.