But hardly nothing!
The late George Nonte used to sign his firearms articles as "Major (rtd.)". The late Jeff Cooper used his USMCR rank on occasion in some of his publications.
I believe that it is considered to be crass in Commonwealth armed forces, although I have seen decorations listed following a surname.
The typical convention is the Rank, Rtd honorific after one's name usually only kicks in at the LCol level and higher.


















































