Major A. K. Raveendran SM is a retired officer of the Indian Army, former National Security Guard commando, film actor and film director predominantly works in Malayalam cinema and some films in Tamil and Hindi. He was awarded the President's gallantry medal in 1991 and 1992 for his contributions in fighting terrorism in Punjab and Kashmir. After retiring from the army, he began his career in Indian cinema as a consultant for military-based films. He made his independent directorial debut in 2006 with Keerthi Chakra for which he won the Kerala State Film Award for Best Screenplay.

Keerthi Chakra is a 2006 Indian Malayalam-language war film written and directed by Major Ravi, in his directorial debut. Starring Mohanlal in lead role as Major Mahadevan and also features Jiiva, Biju Menon, Gopika, Lakshmi Gopalaswamy and Nawab Shah in major supporting roles. This film marks the debut of Jiiva in Malayalam cinema. The film is based on true events related to incidents that took place in Jammu and Kashmir. The film is the first in the Major Mahadevan film series. The title is derived from the Indian gallantry award, Kirti Chakra.