Operation Meghdoot
Operation Meghdoot was the codename for an Indian Armed Forces operation launched in 1984 to preempt Pakistan's competing Operation Ababeel to take full control of the Siachen Glacier in Ladakh on the tri-junction of the India–Pakistan-China border in the Himalayas. Even though Pakistan had conceived their Operation Ababeel in 1983, earlier than India, India preempted them in execution by launching Operation Meghdoot on the morning of 13 April 1984, four days earlier than Pakistan had planned to launch Operation Ababeel, resulting in Indian forces gaining control of almost the entire Siachen Glacier, considered in modern times to be the highest battleground in the world.