We have provided consultation and completed some DoD H-1B cases. In one of these, the beneficiary was about to reach the six-year limit of his H-1B status, and changed to a H-1B2 in order to be eligible for an additional four years of stay. It appears USCIS itself is unfamiliar with H-1B2 visas. We often end up educating CIS on even the most basic legal issues in this area.