When you entered military service you were likely enrolled in the Montgomery GI bill when you completed the Basic Enrollment form (DD 2366). If you were signed up for the program, $100 per month was deducted from your pay for twelve months. The DD 2366 form also provided for an opportunity to reject the enrollment.

The GI bill can be utilized for civilian medical training including medical school, residency or fellowship for a maximum of 36 months. The GI bill can not be used during military graduate medical education. The scholarship can also be used to fund a medical board specialty or subspecialty examination.

The maximum monthly amount you can receive under GI Bill is roughly $1,075. That makes the total amount available for the basic education benefit $38,700. You can choose to participate in the buy-up program before leaving active duty by completing the Increased Benefit Contribution Program form (DD 2366-1). For an expense of $600 you can add another $5,400 to total education benefit amount.

To utilize the GI bill to fund graduate medication education first check with the VA GI Bill website listed below to ensure that your academic institution is an approved program. Then simply complete a VA Form 22-1990 Application for VA Benefits. For medical board specialty exams utilize VA Form 21-4138.

Here are some helpful links:
http://www.gibill.va.gov/GI_Bill_Info/education_forms.htm
http://www.gibill.va.gov/