 The most important position created is the Joint Chief of Staff (Army, Navy, Air Force) that commands commanders-in-chief of the Navy and the Air Force.The Office of Strategic Studies (OSS, or "Sit Maha Byuha Leilaryay Htana") was formed around 1994 and charged with formulating defence policies, and planning and doctrine of the Tatmadaw.The OSS was commanded by Lieutenant General Khin Nyunt, who is also the Director of Defence Service Intelligence (DDSI).