Some goofy kid stabbed me in the knee with a #2 pencil during PE. Each time I go to the doctor or the dermatologist, they ask, What's the story on THIS? Yep, he left his mark on me, a little blue dot.
During the Vietnam War, I was teaching Math. My contribution was my teaching, I was 1-A, but needed in the classroom. My service to my country was through my math skills.