It's not commonly allowed as depending upon the name one wants to switch to, it can confuse other members, plus it's a manual effort requiring the administrator to re-index the entire four year old database.
However, if you write a terrific email to badger@milsurps.com with the request and why, you never no, it just might be possible, although could take a few days to do ...
Regards,
Badger
oh well, that sounds like a bit of work for a not too important reason lol. i just wanted to change it because i no longer have a 1917 but thanks for the reply lol