In Recovery
One day I was curious and asked my grandma if my great grandpa fought in WWII. She told me that he was training to be a parachuter with 9 other guys. A week before they were supposed to be deployed, he was practicing parachuting and he landed on a fence, breaking his leg. He was unable to go into combat because of it.
So his team goes on without him, while he still is recovering from his broken leg. The plane he was supposed to be parachuting on got shot down and everyone on that plane passed away. If he didn’t break his leg, my grandma wouldn’t have been born, which would mean my dad and I wouldn’t have been born either.
Story credit: Reddit / Bonesbing5