This is what I have found on a Presentation slide from Army Reserve G-1 Chief, Officer Management Branch dated 14 Jan 08
You may want to read AR 135-155 Army National Guard and U.S. Army Reserve (Promotion of Commissioned Officer and Warrant Officers Other Than General Officers
Promotion of Army Reserve Soldiers Assigned to the WTUs
[FONT="]•[/FONT]Convening/Promotion Authority: Commander, US Army Human Resources Command, St. Louis
[FONT="]•[/FONT]Army Reserve officers will be considered for promotion upon reaching established time-in-grade (TIG) requirements
[FONT="]•[/FONT]In most cases, promotion boards review an officer's record during the 12 months before they reach maximum TIG. Based on accelerated promotion to CPT, 1LTs are considered approximately 2 years before reaching maximum TIG
[FONT="]•[/FONT]Upon selection for promotion and provided the officer is medically fit (until determined unfit by MEB/PEB):
[FONT="]–[/FONT]Mobilized (Title 10, Section 12302/12301) Army Reserve officers who are on an approved mandatory selection board promotion list may be promoted immediately when matched against a valid position commensurate with the appropriate grade for which selected, if otherwise qualified
[FONT="]–[/FONT]Mobilized Troop Program Unit (TPU), Active Guard Reserve (AGR), Individual Mobilized Augmentee (IMA) officers are not required to be assigned to a higher grade position, rather they must be matched against a higher grade position prior to promotion and assigned to that higher grade position or another higher grade position within 180-days after REFRAD or transfer to the IRR
[FONT="]–[/FONT]Mobilized/ADOS/MRP TPU officers not matched against a higher graded positions will be promoted upon reaching their maximum TIG and will be reassigned to the IRR within 180 days of REFRAD unless assigned to a position of the higher grade.
[FONT="]•[/FONT]Second lieutenants will continue to be promoted upon meeting minimum time-in-grade and completion of military education, unless flagged
Don't know if you are aware of this part from the WTU Consolidated Guidance 18 July 08 on Evaluations. Just an FYI.
[FONT="]5-6. Evaluations (NCOER/OER)[/FONT]
[FONT="]a. [/FONT][FONT="]Soldiers reassigned to the WTU or C2 element will require a change of duty evaluation report (both Officer and NCO, per the requirements of AR 623-3). Once assigned to the WTU, no evaluation is required. Time spent in the WTU will be non-rated. Evaluation Reports will reflect non-rated time (code P) IAW DA PAM 623-3, 15 May 2006 for Officers, Warrant Officers (table 2-9) and Enlisted (table 3-7).[/FONT]
[FONT="]b. [/FONT][FONT="]Non-rated time on an OER or NCOER is declared when a Soldier does not fall under a legitimate rating scheme with designated duties and responsibilities. AR 623-3, Evaluation Reporting System, does not specifically define “non-rated” but intent is gleaned from its use (i.e. AWOL, leave over 30 days, lack of rater qualification, etc.). Being a patient (including Department of the Army WTU Consolidated Guidance - 18 July 2008 convalescent leave) is under non-rated time, shown on an evaluation with code ‘P”. (Per[/FONT]
[FONT="]Information Paper, Evaluation Systems Office, 24 October 2007).[/FONT]
Hope this helps.