The standard route to becoming a military dietitian is through the US Military-Baylor Graduate Program in Nutrition and Internship program. Occassionally individuals who are already registered dietitians can enter the military as a direct commission.
The Graduate Program of Nutrition is a two-phased, degree-producing program.
Phase 1 the didactic portion, is approximately 9 months of graduate level coursework and is completed at the Army Medical Department Center and School (AMEDD C&S), Fort Sam Houston, Texas.
Phase 2, the internship and research portion, is approximately 12 months long and is completed at one of three locations for Army students: Brooke Army Medical Center or BAMC (TX), Walter Reed National Military Medical Center  or WRNMMC (MD),or Madigan Army Medical Center or MAMC(WA). Air Force students will complete their phase 2 training at BAMC. Students who successfully complete the program will be awarded a Master of Science Degree in Nutrition from Baylor University and will be eligible to take the Registration Examination for Dietitians.
A limited number of seats are usually available each year for licensed, Registered Dietitians to join the Army through the masters component portion of GPN. This route includes the graduate coursework and research requirements, but excludes the dietetic internship component. Prior to beginning the graduate program the student would be required to complete the nine week Officer Basic Leadership Course at Fort Sam Houston, TX. Because the availability varies year to year, contact the SP healthcare recruiter to learn more about opportunities.
***Currently this option is not available to Air Force candidates.