So I'm making the character. He's 47, and for the last 30ish years he has been a town guard. Every so often a monster would come in and kill a civilian or two. He took these deaths personally as he felt he failed his job. Then his best friend of 20 years, was killed by a werewolf. And he snapped. Now he sees anything evil as having no place in the world and wants them all eradicated. And he will do it himself. He isn't actively looking for them. But if he were to come across a settlement or camp. He would find some way to destroy it. He treats the civilized races with fairness, equality ,and kindness. He also goes out of his way to help others, so long as they are a "civilized race."
When it comes to the "evil races" (bugbears, orcs, mindflays, drow, etc.) He doesn't actively seek them out. But if he were to come across a camp or some sort of settlement, he would find a way to destroy it.
What would his alignment be?