 Complete the following phrase:  In 1954, he gained commissioned as Midshipman in the Operations Branch of the Pakistan Navy in 1954 and was sent to the United Kingdom to be trained at as a navigation specialist. Upon his return in 1958, he was promoted as sub-lieutet in the Navy and served aboard PNS Tariq in gunnery. In the 1960s, he was the commanding officer of PNS Tariq and participated in the 