For most of 1908, he was sent to train with an elite regiment of the Austro-Hungarian Army, following which he returned to the general staff.
[1] He essentially built up this capacity of the Romanian Army from scratch, centralizing reports, studying the enemy armies, publishing orders and news bulletins, organizing espionage missions, identifying spies.
The work eventually paid off with the victories at Mărăști and Mărășești, as the Romanian side was well informed about the position and plans of its adversaries.
In November, as the war wound down, he was named adjutant to Crown Prince Carol, whose associate he would henceforth remain.
Advanced to division general the following year, he also became head of the royal military guard.