 However, Prime Minister Mohammad Junejo interfered in this matter, and eventually he was promoted to the command assignment with the officer of Zia's choosing.In 1988, Lt-Gen. Shamim was posted on his first formation commanding assignment as the field command of the II "Strike" Corps, stationed in Multan, Punjab, Pakistan, which he served until 1989 when he was elevated as the Chief of General Staff (CGS) at the Army GHQ in Rawalpindi.On April 1991, Lt-Gen. Shamim was made the field commander of the XXXI Corps, stationed in Bahawalpur, but this command assignment only lasted a few months when President Ghulam Ishaq Khan announced to promote to the Lt-Gen. Shamim to the four-star rank– he supersedes no one as he was the most senior army general in the military.