Background
Rujanović was born in the village of Krapa, in the Poreče region, part of the Ottoman Empire (now R Macedonia).
Rujanović was born in the village of Krapa, in the Poreče region, part of the Ottoman Empire (now R Macedonia).
His father was Jovan (or Ivan) Rujanović. In 1895, he joined the Bulgarian-organized Internal Macedonian Revolutionary Organization (IMRO) and fought in the Kičevo region. In 1899/1900 he personally sought the Serbian consuls for the establishment of a Serbian revolutionary organization and Serbian armed bands.
In 1904, he left IMRO and joined the Serbian Chetnik Organization and established one of the first Serbian bands.
He participated in the battle of Kurt"s Stone (1907). After the Young Turk Revolution (1908), he left his weapon until further Young Turk pressing, reactivating his band in 1910.