In 1930 he was given the honorary title of Marshal of Romania, as a recognition of his merits during his command of the Northern Army and of the General Staff.

For instance, he held the title of senator by right, based on his high rank in the army, and that of member of the Crown Council of Romania.

He graduated from the officers' infantry and cavalry school in Bucharest and the École spéciale militaire de Saint-Cyr.

Documents found in military archives have brought to light Prezan's role in creating the Romanian National State.

During the Hungarian–Romanian War (November 1918–March 1920), Prezan led the Romanian Armed Forces in the battles of Bessarabia, Bukovina, and Transylvania.