Born in 1989 to Gustav & Alica Reznik, Radko was a smart yet rebellious kid. Stealing food from farms outside of Gvozdno, bothering the locals in Severograd. He wanted nothing more than to be a soldier, during the civil war his mother had fallen sick with cancer, she made him promise her that he would not enlist himself into the CDF, she didn't want to spend the last part of her life wondering whether or not her son was dead. Once she passed away and towards the end of the civil war Radko enlisted, becoming a private for the 76th "Jarilo" Mechanized Battalion of the CDF.
Being stationed in other parts of Chernarus a lot of the time but where he really wanted to be was home, defending the province he grew up in. He may have grew up stealing and pestering a lot of the locals, but South Zagoria is his home none the less. So when the infection first happened, he lost contact with his battalion after a rescue mission for civilians turned wrong. After looking for his Bratr's for days he came to the realization of what has happened. Radko heard that Captain Alexander Bardov was in South Zagoria a few days prior, so by himself he travelled back home to try to rendezvous with the Captain. After his efforts of trying to keep the remaining CDF forces in South Zagoria organized and strong, Radko was field promoted to 1st Lieutenant by Major Kuba Zavodny.