During the repression of the 1907 peasants' revolt, he headed a cavalry unit in Covurlui County. Opinions on his role in the events diverge: while some historians believe Antonescu was a particularly violent participant in quelling the revolt, others equate his participation with that of regular officers or view it as outstandingly tactful. In addition to restricting peasant protests, Antonescu's unit subdued socialist activities in Galați port. His handling of the situation earned him praise from King Carol I, who sent Crown Prince (future monarch) Ferdinand to congratulate him in front of the whole garrison. The following year, Antonescu was promoted to Lieutenant, and, between 1911 and 1913, he attended the Advanced War School, receiving the rank of Captain upon graduation. In 1913, during the Second Balkan War against Bulgaria, Antonescu served as a staff officer in the First Cavalry Division in Dobruja.