In 1912, he led the Serbian Army into spectacular victories in the First Balkan War against the Ottomans (Battle of Kumanovo, October 1912, Battle of Monastir, November 1912) and the Second Balkan War against Bulgaria (Battle of Bregalnica 1913). Field-Marshal Putnik, expecting Bulgarian attack, had deployed his troops on the most important strategic points near the river Bregalnica (Bregalnitza), which was essential for a quick victory after the sudden, unannounced Bulgarian attack.
In 1912, he led the Serbian Army to impressive victories in the First Balkan War against the Ottomans (Battle of Kumanovo, October 1912, Battle of Monastir, November 1912) and the Second Balkan War against Bulgaria (Battle of Bregalnica 1913). Field-Marshal Putnik, anticipating a Bulgarian attack, had positioned his troops on the most crucial strategic points near the river Bregalnica (Bregalnitza), which was vital for a swift victory after the sudden, unannounced Bulgarian assault.