My grandfather was in the navy.
During the late 50 and 60s he served in missions in Indonesia and Papua New Guinea. He never saw any action though, this was already after Indonesia’s independence, and a time of peace. I also have an uncle who served with NATO forces in Lebanon in the 80s, but I haven’t seen him for 10 years, which was also the first time in 10 years. I don’t think I have any other relative who has been in the military, for at least up to my great-grandparents.