Those of you who use Genes Reunited will probably be aware of the facility which notifies you of record matches in your posted tree.
I had such a recent match, suggesting that Frederick Elmer HAGESTADT and his cousin, John, were both participants in World War I. A short spell of research revealed that they were, unfortunately, casualties.
Frederick fought in East Africa, and is commemorated at the Dar Es Salaam British & Indian Memorial.
His cousin, John, is commemorated at the Trois Arbres Cemetery, Steenwerck, France