The 101st Home Air Defence Fighter Group later Wing (unit definition by US style) (101. Honi Légvédelmi Vadászrepülő Osztály later Ezred) was an elite fighter-group of the Royal Hungarian Air Force in World War II. Also known as the Puma after the unit's insignia, it was the most famous and well known of all Hungarian fighter units during the war. Created in the spring of 1944, under the Nazi German occupation of Hungary, it operated against US Fifteenth Air Force and the Soviet VVS during 1944-45 over Hungary and later, Austria. Analogue to Jagdverband 44, many of the highest scoring and most experienced Hungarian fighter pilots served in the unit, including the top scoring Hungarian ace of World War II, Szentgyörgyi Dezső.