Navy day is observed on 4 December every year to celebrate the achievements and the role of the naval force in the daredevil attack on the Pakistani naval base in Karachi. The war of 1971 was a military conflict between India and Pakistan. The Indian Navy started the covert naval operations, which were executed successfully. Overall, the Indian Navys attack was carefully planned and well executed. Operation Trident has often been described by experts as one of the most brilliantly planned operations in the history of naval warfare. INS Nipat, INS Nirghat, INS Veer and INS Vidyut were part of the killer squadron that was assigned with the task of sealing the fate of the Karachi harbor. The crew communicated in Russian, making it difficult to for the enemy crew to intercept. The attack was a complete surprise and a shock to Pakistans Armed Forces Command. The operation was considered an enormous success for the Indian Navy with no casualties or damage to the Indian task group, which returned safely back to Indian ports.