Unfortunately, the Military does not currently recognize "Service Dogs" for PTSD or other MH related issues. Therefore a board's findings would be irrelevant. One more reason to contact your Congressional representatives and urge that the VA and the DoD recognize the benefits of Service Animals...
Vanderploeg RD, Belanger HG, Curtiss G: Mild traumatic brain
injury and posttraumatic stress disorder and their associations with
health symptoms. Arch Phys Med Rehabil 2009; 90:1084–1093
10 USC Chapter 61, §1216a. Determinations of disability: requirements and limitations on determinations: 2(b) (b) Consideration of All Medical Conditions.—In making a determination of the rating of disability...SHALL take into account ALL MEDICAL CONDITIONS, whether individually OR COLLECTIVELY...