The following article lists three Orders of Battle for the Iranian Army at different periods. Note, that this is not the order of battle of the Iranian Revolutionary Guards but of the regular ground forces (Artesh). The source is Globalsecurity.org for the first three lists, and http://thearkenstone.blogspot.co.nz/2009/12/identifying-units-of-iranian-armed.html for the final series of notes.
References
Structure of the Iranian Army Ground Forces Wikipedia(Text) CC BY-SA