Makes perfect sense. He was born during WWII. Actually a very good name for a baby born during that war because he was going to have to fight to survive.
"Ratko" is the only Serbian name I know of that deals with war. But there are several Serbian names I can think of that deal with peace. "Miroslav" ("Peace of the Slavs") and "Slavamir" ("Glory to Peace") and the female name "Mira" ("Peace")
War was a constant in the Balkans. Peace was an illusive dream and hope.
They are of a type that is widespread in the Indo-European languages such as Greek, Germanic, etc.--usually based on two roots (Themistocles, Aristophanes, Xenophon, Eratosthenes, Mithradates, Alaric, Edward, Ethelred, Beowulf, etc.). Often the roots have to do with war, glory, strength, or other qualities valued in the early Indo-European societies.