Your ancestor's BIRTH DATE tells you what WARS he may have fought in. Family Tree Magazine posted this infographic on their Facebook page and asked readers to share it. This summarizes what wars an ancestor may have served in based on his birth-date. If you find that you possibly have an ancestor that served in a conflict, go to Fold3.com and search for his information. Don't have a Fold3 subscription? You can access Fold3 free at the Broadmoor Branch of the Shreve Memorial Library.