To view or download the complete regulation, click on the the link to it in the box above these comments.

“IADT” is Initial Active Duty for Training. “DEP” is Delayed Entry (or Enlistment) Program. “MEPS” is Military Entrance Processing Station.

MCO P1100.72C MILITARY PERSONNEL PROCUREMENT MANUAL, VOL 2 (18 Jun 04)
2303. INCENTIVE PROGRAMS FOR ENLISTMENT IN THE
SELECTED MARINE CORPS RESERVE (SMCR). ...

3. Training/Pay Category P Program (MCO 1500R.36). The Training/Pay Category P (Cat P) Program offers applicants who enlist in the SMCR an opportunity to participate in weekend drills and receive pay prior to commencing IADT. Participants benefit from training and are paid for their drills. Uniforms will normally be issued.
...
b. Drill Attendance. The Cat P program is voluntary, however, individuals who opt for the program will be held to the same participation standards as a mandatory participant. Drills will not normally exceed 48 hours inactive duty for training (IDT) periods and will commence as prescribed by the SMCR unit commander. For those NPS Reserve enlistees desiring to participate in the Category P Program subsequent to enlistment, drills will begin as prescribed by the RS CO. The SMCR unit commander will report as per instructions contained in MCO P1080.40 (MCTFSPRIM).
...
4301. DISCHARGES
...

2. Disqualified Enlistees
...
c. When an individual is qualified, properly enlisted, and sworn in, but refuses to execute the order to recruit training or to the assigned command, the recruiting station commander will immediately notify the gaining command of the same. The gaining command will join the enlistee by service record only and make an appropriate unit diary entry reflecting “unauthorized absence”, and process for discharge.
...

3. Other Situations Involving Members of the DEP and SMCR Awaiting IADT Where Discharge is Appropriate
...

d. Desire for Release or Intent Not to Report. Cases will arise in which members express a desire to be released from their enlistment contract. This may have been expressed through letters to a congressional representative via chain of command. Their intention is to not report to the MEPS for enlistment in the Marine Corps, or to not execute their IADT orders. Whenever commanding officers of recruiting stations are confronted with the above situation, the following action will be taken:

(1) The individual will be interviewed and counseled about fulfilling the contract. Individuals will be reminded that their enlistment contract is legally and morally binding.

(2) If the interview and counseling session fails, and the individual insists on being released from the enlistment, the individual will be discharged as soon as possible.

(3) Letters advising individuals of their discharge from the DEP should not chastise or degrade the individual. Rather, we should offer our best wishes for success in their future endeavors so as to maintain a cordial relationship.

4. Procedures for Discharge of Members of the DEP/SMCR Prior to IADT

a. District commanding officers may effect discharges for members of the DEP and members of the SMCR awaiting IADT under the provisions contained in the current edition of MCO P1900.16. At their discretion, they may authorize recruiting station commanding officers to effect the requested discharges. Entry-level status begins upon enlisting in any Reserve component and terminates 180 days after the beginning of entry-level active duty training. Therefore, these discharges will be categorized as “uncharacterized entry-level separations.” Under normal circumstances, these discharges do not require a DD 214, or discharge certificate (DD Form 256). The letter format in figure 4-3, page 4-65, will be the only correspondence used to effect an “uncharacterized entry-level separation.”

6213. UNSATISFACTORY PARTICIPATION IN THE READY RESERVE.

A Marine may be separated for unsatisfactory participation in the Ready Reserve under criteria established in DODDIR 1215.13 series, MCO P1001R.1 (MCRAMM) series, and the Commander, Marine Forces Reserve (MARFORRES). The separation authority is the GCMCA. Characterization of service will conform to paragraph 1004 and the rules of table 6-1.
...

Table 6-1. Guide for Characterization of Service
...

...

NOTES:

1. Authorized unless Marine is in an entry level status.

2. Not authorized unless Marine's record is otherwise so meritorious that any other characterization clearly would be inappropriate.
...

5. Authorized in accordance with the guidance in paragraph 1004.

To view or download the complete regulation, click on the the link to it in the box above these comments.

“AT” is Annual Training; “ADT” is Active Duty (for) Training.

“EDP” is Equivalent Duty Period.

1. A Reservist may be termed an unsatisfactory participant when one or more of the following occurs:

a. Unsatisfactory IDT attendance or participation to include:
...

(5) Any unexcused absence from an IDT period.
...

b. Failure to attend scheduled AT or any other ADT requirement.
...

3301. UNSATISFACTORY PARTICIPATION

1. Members Serving Pursuant to the Initial Enlistment Agreement. When a Reservist with a mandatory participation requirement acquires at least nine unexcused absences, or is categorized as an unsatisfactory participant for reasons other than excessive absences, the unit commander must pursue one of the following actions:

a. Retain the Reservist and authorize EDPs to regain satisfactory participation status.

b. Initiate separation proceedings, per MCO P1900.16.

NOTE: The nine unexcused absences do not have to be missed consecutively.
...

5002. JURISDICTION OVER RESERVISTS ON ACTIVE DUTY OR ACTIVE DUTY TRAINING

1. Members of the Marine Corps Reserve lawfully called or ordered to AD or ADT are subject to the UCMJ beginning with the effective date of such orders.
...

5003. JURISDICTION OVER RESERVISTS ON INACTIVE DUTY TRAINING

1. Article 2A(3) UCMJ extends court-martial jurisdiction over Reservists while on IDT. A Reservist on IDT is subject to the UCMJ beginning at the time the command conducts its initial muster. Such status and UCMJ jurisdiction shall continue until the member completes the final IDT period on the last day of such periods.