If his dob was 1760, that would have made him 16-17 at the time he served during the winter of 1776-7. Not an unlikely age for that time period. I will go to my local library tomorrow and get the info on the book for you. If your library doesn't have it, perhaps you can do an interlibrary loan.Once you get the book, you will notice there is a Zachariah in practically every generation and branch of the family. But that's the way it usually is<g>.Till tomorrow.