I believe there are 5 WW1 vets left in Canada. This was the first year that none of them made it to the memorial in Ottawa, although one of them was out on one of the NHL hockey rinks the other day in his wheelchair! They average 105 years.
My mum, dad and all uncles were enlisted in WW2, and, miraculously, all survived and lived to a good age despite 2 being wounded, one very close to death.
Mum, dad and 1 uncle still living, and looking after themselves in their own homes! But I've been discovering that they primarily had very very good genes for at least 200 years, so I guess I shouldn't be surprised that they're all well over 80 and still going strong!