My Granddaddy was in the Navy in WW I, my Dad was in the Army Air Force in WW II, my Uncle was in the Navy in WW II, and another Uncle was in the Air Force in the Korean War. I was in the Service during the late Vietnam era but served stateside. So yes, I guess I'm interested in both modern and pre-20th century military history.
6th and 5th GGrandfathers in the Revolutionary War. 2nd GGrandfather in the Civil War. Uncle in WWII. Uncle in Vietnam. And I've been in the service since 1980. Think my favorite time period is Civil War, followed by Rev War.