It must be one of the most unlikely tales in the history of Australians serving in foreign wars. Warning: This story contains graphic details. One moment an Adelaide man known as "Ozzy" was a traffic controller and part-time handyman with zero military experience; the next he found himself under enemy fire as a combat medic and soldier fighting on the front lines in Ukraine. "It was frightening, genuinely frightening," he says. "Nothing prepares you for that. Even if you were a seasoned soldier, you'd struggle to deal with it." Within three weeks of Russia's invasion, Ozzy flew to Poland and...