Distant ancestors in the American Revolution. As is fairly common around here, ancestors on both sides of the Civil War. They may have taken shots at each other at Shiloh.

Great granddad was with the US Volunteer Infantry in the Phillipines during the Spanish American War. That may have been the last war to call up volunteer regiments, don't know.

A close uncle was with the 95th Infantry Division in WW2. Two more uncles were with the 7th Infantry Division in Korea. None of them would talk about it.