Laser Warning and Countermeasure System (LWCS) is one of the major improvements implemented on Arjun MBT Mk-IA. Once a laser threat is detected, the smokegrenade launcher automatically rotates in the direction of threat and fires the aerosols to form a screen of smoke which screens and obscures the vehicle. In the meantime, the vehicle can be maneuvered to a safe area. It has auto and manual modes of operation. Development, integration and trial evaluation have been successfully completed.