How do I find duty descriptions? I'm in Korea and that should be all I have to say.

Ted send me an email with your unit info so I can help you better. If you're still doing what you did in BRAGG then DA PAM 750-3 and DA PAM 750-1 have pretty good Field Maintenance position descriptions. There are others but I think these are the most current for maintenance.

Google "Army MOS Smartbook" Everything is in there. You'll need a CAC to access I believe.

Chief, are you trying to find one for a military billet or a civilian (GS) position? The ones listed in other comments are great for military positions. For civilian (GS) positions try FASCLASS (http://acpol2.army.mil/fasclass/search_fs/search_fasclass.asp).

If you are looking for duty positions in the civilian sector (for post retirement) try Salary.com.