Mine had the dubious honors of smuggling booze as an early teen, and allegedly helped popularize deposit fees because he would rent all the major party halls in his city, and then cancel all but one, ensuring he ran the only big party in town on a given weekend.
He started off as Infantry sent to Gallipoli, then joined the Australian Flying corps and flew over Ypre and the Somme. After the end of WW1 he joined the RAF and flew medium bombers over Europe during WW2.
I just remember him as a kind old man that loved me.