Abstract
With the impact of World War 2, ?Intelligence', has acquired a different position from the war perspective. Undeniably, intelligence has gained importance as it has been used as a key element in the war process. Additionally, it helps in developing news techniques and technologies especially in adopting new methods of being a scout or a gumshoe. What has later achieved the title of ?intelligence revolution' has completely reorganized its manner and pattern of collecting information, enhancing the understanding of the strategies and modes as well as the fulfillment of clandestine operations. In addition to these improvements, a special focus has been drawn towards the performances of imagery and signal communication. Signals intelligence which is conventionally called SIGINT is one of the major forms of intelligence. The derivatives of SIGNIT include COMINT and ELINT. COMINT which is otherwise known as Communications intelligence, centers around intercepting signals through the communication streams such as telephone, fax and radio. Presently, the sophisticated medium has arrived wherein, information is sent through encryption and advanced computers are used to decrypt the messages. ELINT which is electronic intelligence intercepts signals by using electromagnetic waves and most commonly the radar system. However, the entire process boils down to cipher breaking (deciphering). Imagery is concerned with the pictorial information collected through the aerial mode or satellites and its observations. These two resources of intelligence are traditionally opposed to the HUMINT. HUMINT is the human intelligence which operates through interpersonal contact.
