Preobrazhensky Regiment
Djunkovsky was a scion of nobles from Poltava Gubernia. An alumnus of the Page Corps, he started the military service in the Imperial Guard (Russia) of Preobrazhensky Regiment. Djunkovsky served as adjutant of Grand Duke Sergei Alexandrovich, the head of the Moscow City Board of the People's Soberness Trusteeship and the Chief of the Special Corps of Gendarmes.