The Day of Patriots and Military is observed in Hungary every May 21 as an official memorial day, commemorating the anniversary of the end of the siege of Buda, which lasted from May 4 to May 21, 1849, during the Hungarian revolution of 1848-1849. This day celebrates the victory of Hungarian troops over the Austrian army and honors the contributions of the Hungarian Defense Force, which was formed from self-defense groups. Established by the government in 1992, the day is recognized as a professional holiday for the Hungarian Defense Force, which consists of the Hungarian Ground Force and the Hungarian Air Force. Although it is not a public holiday, it serves to acknowledge the military's role in the nation's history. The President of Hungary acts as the Commander-in-Chief, while the Ministry of Defense oversees political and civil control of the army.