He went as a cadet sergeant to the First Balkan War in 1912 as a member of the Šumadija Division, and on 1 December of the same year he was promoted to the rank of potporučnik.

He entered the Second Balkan War in 1913 as a sergeant of the Šumadija Artillery Regiment, and on 1 October of the same year he was promoted to the rank of lieutenant.

After the end of the war, he served in the artillery, and in 1922 he entered the Higher School of the Military Academy, which he graduated with honors in 1924.

In 1928, he was transferred to France and he then held the positions of Chief of Staff of the Air Force Command.

Damjanović, together with Dragi Jovanović, accompanied Nedić to the meeting he had with Mihailović in the village of Ražana near Kosjerić in August 1944.

The Serbian Volunteer Corps refused to place itself under Damjanović's command, and the Germans also planned to transfer it to Slovenia so that it would not be destroyed in the fight against the Partisans and the Red Army.

Together with the Slovenian Home Guard, they were subordinated to senior SS and police leader Odilo Globocnik and were to fight under German command against Partisans in Friuli-Venezia Giulia.

[6] The plan however was never realized due to the capitulation of the German Reich, and these forces ended up in part in Austria (with some members of the Slovenian Home Guard being killed in the Bleiburg death marches) or fled in small numbers to Italy and surrendered to the Allies.

He was buried at the Zelhorst cemetery in Hanover with his funeral attended by several hundred comrades-in-arms and other emigrants.