Internet of Things (IoT) is the system of inter related computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UID’s) and the ability to transfer data over a network without requiring human - human or human - computer interaction . IoT has made revolution in the field of military applications which bases for the purposes of reconnaissance, surveillance, together termed as Internet of Military Things (IoMT). Considering IoMT and applying the ideas of military domain, a potential application called Instantaneous Battlefield gun (IBG) is proposed. IBG is an instance of an automated security system which involves in detecting the obstacle using ultrasonic sensor and then aiming at it using laser beam of light. Security and accurate detection is the major concern of IBG.