The 4th (Northern) Army was established on the night of 14/15 August 1916 by High Decree no. 2784, signed by King Ferdinand I of Romania. On the same night, Armies 1, 2 and 4 (Northern) engaged in the strategic operation for the liberation of Transylvania on the entire front, along the Eastern and Southern Carpathians. Constituted in the exceptional conditions of Romania's entry into the First World War, the 4th (Northern) Army, a representative structure of the Romanian Army, remained in military history through the glorious deeds of arms of the soldiers from the great units that took over its traditions. fight, over time.