Milutin Nedić was born in the Belgradesuburb of Sopot on 26 October 1882, to Đorde and Pelagia Nedić. His was an old revolutionary family. His brother Milan would go on to have a long military career lasting until World War II. Nedić's father was a district chief and his mother was a schoolteacher. She was the granddaughter of Nikola Mihailović, who was mentioned in the writings of the poet Sima Milutinović Sarajlija and served as an ally to the revolutionary leader Karađorđe. The Nedić family was originally from the village of Zaoka, near Lazarevac. It traced its origins to two brothers, Damitrije and Gligorije, who had defended the Čokešina Monastery from the Turks during the Serbian Revolution. The family received its surname from Nedić's great-grandmother Neda, who was a member of the Vasojevići tribe of Montenegro. In 1920, Nedić married Anastasia Krsmanović, the daughter of a successful Belgrade merchant. The marriage did not last, and later he married a woman named Jelica Hristić. The couple had one child, a son named Nastas.
Nedić attended the Military Academy in Belgrade in the late-19th century, and finished first in his class. He began his military service in 1901, and participated in both Balkan Wars, during which he was in the communications section of the Supreme Command and later adjutant to the Chief of the General Staff. During World War I, Nedić was the chief of the General Staff section of the Ministry of War, and chief of staff of the Drinska Division.
Interwar period
During the interwar period, Nedić was the Yugoslav military attaché in Bulgaria, France and Italy, before being appointed as the General Officer Commanding the Air Force. He remained in this position until he was appointed as Chief of the General Staff in September 1936. On 17 September 1938, Nedić approved a Yugoslav war plan to address a potential attack from the north following Germany's annexation of Austria. In October, he was replaced as Chief of the General Staff by General Dušan Simović, who implemented a new war plan code-named Plan S. Nedić became the Minister of the Army and Navy. Contemporary British diplomatic staff described him as having "a charming personality", and stated that he was "very energetic and keen". However, they also blamed him for the indecision that plagued Yugoslav air policy during his time as minister.
World War II
Nedić commanded the 2nd Army Group during the German-led Axisinvasion of Yugoslavia of April 1941. Nedić's command consisted of General Milan Rađenković's 1st Army, responsible for the area between the Danube and the Tisza, and the 2nd Army of General Dragoslav Miljković, responsible for the border from Slatina to the Danube. Nedić had no Army Group reserve, but the 2nd Army was to constitute a reserve of one infantry division deployed south of Slavonski Brod. During the invasion, he was taken into captivity by the Germans and detained in a Germanprisoner-of-war camp in Germany. The Germans allowed Nedić to return to Belgrade in 1942. He left Belgrade in October 1944 and retreated to Austria, where he committed suicide in 1945.