Answer I believe it depends on whether it was a joint account or whether you were an authorized user. If the account is in your father's name only and you were authorized to use the card, I don't think anyone can come after you. However, if your name appears on the account with your father's as a joint holder, you could be liable for the balance.
Make sure to find out whether it's the actual credit lending company coming after you or a debt collector to whom they've sold the debt. Debt collectors can be notoriously unscrupulous and have been known to ignore the law You can get a free initial consultation with most attorneys. Choose one who specializes in this area and find out what your legal recourse is.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.