W.T. Door
A President or Vice President of the USA is referred to with their title even after they leave office. It is the same for the Secretaries of the USA's departments of government, such as Secretary of Defense.
?
Doctor, counselor, professor, general, captain.
skeptik
Actually, President is generally treated as a lifelong title.
But aside from that - whatever military rank you have when you retire is yours for life. Also, Doctor, Professor, Counsellor (the address for lawyers) are all lifelong.