During the War of the Fifth Coalition (1809), the idea of “national war” was put into practice in the Austrian Empire. Not only the Habsburg military system was reformed, but the war was accompanied by an extensive propaganda campaign, implemented by intellectuals in the service of the Viennese Court. In Hungary, the palatine, Archduke Joseph was responsible for harmonizing the military innovations with the constitutional traditions of the country. The mobilization was carried out mainly by the partly modernized insurrectio, which obliged the masses of nobility to do personal military service in exchange for their privileges. This anachronistic means of defense tried to satisfy, lopsidedly, the demand of manpower in an age of mass warfare. Consequently, the imperial propaganda also had to be adapted to the particular Hungarian situation. This paper investigates this unique Hungarian situation, through analysing the relationship between the military mobilization of the nobility by the insurrectio and the efforts of the official propaganda to construct a valorous and patriotic self-image of the Hungarian nation. First, the study analyses the limited reforms concerning the traditional system of defence of the estates. Second, it presents how the official propaganda of the insurrectio shaped the ideal image of the “noble warrior” on national level in the periods of mobilization, war and demobilization. Third, it discusses the cult of heroes and the fallen of the insurrectio both on national and local (county) level. It argues that this cult proved short-lived in the long run because of the defeat of Austria, the shortness of the war, the uneven involvement of the counties in fighting, and so forth. The paper concludes that the insurrectio of 1809, which was the last great moment of the military mobilization and the valorous patriotic-national ideology of the nobility, did not fit the modern nation-building process and therefore has never incorporated into the Hungarian nationalism as a true “national war.”