In 2007, I was granted 10% disability for a severe leg injury sustained while on active duty as a reservist. In 2008, I did more active duty time and was told that I would not rate both disability compensation and my salary on active or reserve duty. I thus had it suspended. About two years ago, I discovered that I did in fact rate disability compensation while in a drilling reserve status and that the amount would be prorated based on the number of drills each month. Today I discovered that I have been paid only my disability compensation from the date I filed for resumption of the payments. My request for the back prorated payments, which I was told that I did not rate, was denied even though I do rate them. Does anyone know how best to approach appealing this? I couldn't find the answer anywhere on here and I appreciate the help.