[1] Radmilo was born in Belgrade 1940, and began his career in Partizan Tennis Club.
He was a state champion in the junior categories and played in the Galea Cup (under 21 years).
Armenulić was the longest serving federal captain in the history of Yugoslavian and Serbian tennis, and perhaps beyond - 17 years and three months.
[1] Armenulić trained a generation of very talented players: Bruno Orešar, Goran Prpić, Slobodan Živojinović, Goran Ivanišević.
[2] His first wife was singer Silvana Armenulić, with whom he has a daughter Gordana.