In IOSX ,till now apple not providing the permissions for customising the back button in navigation controller ,for achieving your requirement you can use your custom button because we are not having permissions for changing the back button frame.
Put below code in you . M file button will auto resize with title.
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.