A Romanian Army career officer who made his name during the 1907 peasants' revolt and the World War I Romanian Campaign, the antisemitic Antonescu sympathized with the far-right and fascist National Christian and Iron Guard groups for much of the interwar period. He was a military attaché to France and later Chief of the General Staff, briefly serving as Defense Minister in the National Christian cabinet of Octavian Goga as well as the subsequent First Cristea cabinet, in which he also served as Air and Marine Minister. During the late 1930s, his political stance brought him into conflict with King Carol II and led to his detainment. Antonescu nevertheless rose to political prominence during the political crisis of 1940, and established the National Legionary State, an uneasy partnership with the Iron Guard's leader Horia Sima. After entering Romania into an alliance with Nazi Germany and ensuring Adolf Hitler's confidence, he eliminated the Guard during the Legionary Rebellion of 1941. In addition to being Prime Minister, he served as his own Foreign Minister and Defense Minister. Soon after Romania joined the Axis in Operation Barbarossa, recovering Bessarabia and Northern Bukovina, Antonescu also became Marshal of Romania.