 Complete the following phrase:  In 1947, small engineering units formed what was then known as Pakistan EME, but was officially given commission in 1957 as EME, with only 20 officers were part of the Corps. In order to produce the officers and personnel, the College of Electrical and Mechanical Engineering CEME was established. All of the personnel and officers are sent to CEME before starting their active duty in the Corps. In 1959, its objectives were expanded it was asked to repair and maintained the aerospace equipments of PAF, Navy and Marines, though the services later established their own units. As for its war capabilities, the Corps took participation in 