temperatures in eastn europe just have dipped to near freezing, a climate that kapon has never experiencedjoin him for the next leg of his journey. the first stop, a military shop. he still needs a bullet-proof vest, since he is not sure whether the army provides one. >> do you have body armour? no? but another body armour you have? >> no. >> 5.11? >> no, no, no. we don't have that. reporter: he decides to go without body armor. but isn't that a suicide mission? >> a bit. it would be good to have one. but even with a vest, the bullets come through. so the only thing i can do is hope to come back in one piece. reporter: by chance, kapon meets another man who also want to join the battle. to me, he makes a dubious impression. >> killer. killer. killer. >> killer. >> killer. reporter: the man doesn't want to be filmed, but claims he fought in iraq and afghanistan, working for a private military contractor. kapon has no combat experience, so he decides to train on a shooting range. he is now joined by a man from colombia who goes by tato. they met online in a group of spanish-speaking voluntee