My mother's father was a POW during WW2, once the war was over he became a minor and worked on the rail roads. A proper man's man. He was once knocked off his motorbike by a car full of blokes, rumour has it, they got out to see if he was okay and he quickly jumped up and started on them.
If only he'd have played it up, could have got some decent compo for that!
Not too sure what my paternal grandfather did, I believe he was a school teacher in his younger days. During my life he just worked on his own farm.
My mother's father was a marine who got sent to pearl harbor after the attack and spent the entire war drinking beer with his friends (I love that story). Afterwards he worked at a newspaper printing press and handled lots of raw lead which is probably why he died at age 46. Heavy metal poisoning sounds cool, but it turns out it isn't.
I have no idea about my dad's father except for the fact that he was an indian dude.
My maternal grampy worked as something akin to an engineer (the design kind, not the train driving sort) for the railroad after he came home from military service, while my dad's parents owned and operated a restaurant together. My paternal grandparents were both long deceased before I was born but I've seen them in pictures, dressed just like folks out of an old fashioned diner.
Dad's dad worked in the pits, then the shipyards, then worked on cruise liners as a labourer. Now he's a drunk (a lovable one at least)
Mam's dad had a milk float, travel agents, then made a pallet company which his three kids and all their spouses work/worked at. Fitness nut too, yet he was the one who died of cancer while my other grandad drinks & smokes while going on strong. Funny how that works