The Eastern Air Command is one of the five operational commands of the Indian Air Force. Currently headquartered in Shillong in Meghalaya. Named No. 1 Operational Group at the time of its inception, 27 May 1958, it was based at Ranikutir in Kolkata as a part of the Govt's increasing emphasis on defence of the eastern borders. The Operational Group was upgraded as Command on 1 December 1959 with headquarters at Fort William, Kolkata and Air Vice Marshal KL Sondhi as the first AOC-in-C of the Eastern Command Indian Air Force#Rank structure. After the 1962 Indo-Chinese War, The decision was made to raise a full-fledged command at Shillong. The area of responsibility of the command now covers 11 states, and is bound by the international boundaries of Nepal, Bhutan, China, Myanmar and Bangladesh incorporating 6300 km of common border. Eastern Air Command now has permanent airbases at Chabua, Guwahati, Bagdogra, Barrackpore, Hasimara, Jorhat, Kalaikunda and Tezpur with forward airbases at Agartala, Kolkata, Panagarh and Shillong. Eastern Air Command consists of Air Defence squadrons consisting of the MiG-21 and Ground attack squadrons consisting of the MiG-27. It holds the motto "Samareshu Parakramaha" ("Lit: Valour in battle"),