 Complete the following phrase:  Major. General. Obedur Rehman was the first SO-in-C of the Corps of Signals. On March 23, 1956, the Corps was re-designed as Corps of Signals, and more objectives were made responsible to Corps. In 1948, the Corps established the Military College of Signals to train the personnel and officers for the Corps. A major re-organization were carried out when Corps officers also helped established the Joint Signal Intelligence JSI and the Corps nomenclature was also changed. The regiments and squadrons became as battalions and companies. In 1962, the unit was sent to Iran to help built the Iranian Armys own Signal corps, and as for its war capabilities, the Corps took participation in 1947 war, 