Several years? Hmm perhaps a couple at most, I can't remember how long ago I drew this but I'm pretty sure it wasn't THAT far back o_O I remember looking at the fan art section on this site actually, which sparked up my interest in wanting to draw it. Someone else had done a soldier I think?
It shouldn't be on DA or the xcom forums though, as I don't have a da account that I use anymore nor have I ever been to the xcom forums, so if it can be found there it's probably stolen o_o
Unless you're thinking of Elfwood? As it's on my fanart section of my elfwood account but that's about it (Well, not counting my personal photobucket).
If anyones interested in fact, my Elfwood account is here:
http://www.elfwood.com/art/l/a/latkinson/latkinson.html
Though I haven't updated it in quite some time now.