(Note: these are the ones i know about and also so far (hoping for the tradition to continue for generations))
My Dad (SAS, 12 yrs 227 days)
Uncle (Navy, 20 yrs)
Great Uncle on my moms side (Army, WWII)
His 2 brothers (one Army other i think Navy both served at least during WWII)
My dads Great Great Uncle (Machine Gun Corps WWI, Western Front)
Cousin by Marriage (Air Force about 12 or 13 yrs, returning Kuwait to fly C-130's in about a week or two)
Great Great Great Grand Father (Civil War, shot in the shoulder)
Great Great Great Uncle (Civil War also, wounded in Picketts Charge got shot in the chest. The bullet was never removed lived to tell about it
)
Also two or three in the Revolutionary War on my moms side and a few for the Brits on my dads side. And i think at least one or two in the War of 1812.
I think we were spared for the Forgotten War and the 10,000 Day War.