'Deccan Devils' completed 50 years of glorious service to the Nation, Army and Regiment on October 1, 2016. Since, raising, the battalion has participated and contributed in number of operations including Op Pawan, Op Orchid, Op Meghdoot, Op Rakshak, Op Hifazat, Op Vijay, Op Falcon and Op Parakram. During the Units' tenure at Keren sector, the exceptional performance of the battalion earned it a Chief of Army Citation in the year 1993. The unit was awarded with a GOC-in-C Northern Command Unit Appreciation for its successful tenure in Op Rakshak and Op Vijay in the year 2000. The impeccable record of the unit in MONUSCO has manifested in UN Force Commander citation in the year 2014. The unit has served in various terrains from icy heights of northern glacier, deserts in the West, High altitude areas of North and North East to Jungles of Nagaland and Manipur and also on a overseas mission in Congo as part of MONUSCO. The unit is also recipient of one Kirti Chakra, one Shaurya Chakra and 16 Sena Medals.
The Battalion was raised on August 1, 1942 as the 21st Indian Garrison Battalion at Cannanore. In 1944, unit was re-designated as 25/3 Madras Regiment and was employed in Bombay. Consequent to the general reduction of the Indian Army post World War II, the battalion was disbanded on October 14, 1946. The unit was re-raised initially as the 11th Battalion, the Madras Regiment on October 1, 1966, at Golconda, Hyderabad by Lt Col Mohinder Singh and was re-designated as 25th Battalion the Madras Regiment on October 18, 1966. On May 23, 1970, during unit tenure at Sikkim (HAA), Second Lieutenant PT Mathew received the colours on behalf of the Battalion from the President of India, Shri V V Giri at Wellington. In 1975, the Battalion was named "Deccan Devils" by Commander, 11 Inf Div.
The Golden Jubilee celebrations were held from October 14-16, 2016 at Secunderabad, where the battalion was raised in the year 1966. It is a unique feat in history of an Infantry battalion to celebrate its golden jubilee at the same location were the battalion was raised and also celebrated its Silver jubilee. The occasion witnessed attendance of more than thousand ex-servicemen, including ex-Commanding Officers and senior serving and retired officers. The events included a special memorial service in remembrance of martyrs wherein the veer naris of the unit were also felicitated. A special sainik sammelan was held, in which Lt Gen SL Narasimhan (Retd) addressed the gathering and remembered the glorious achievements of the battalion and wished the Unit with success in all its endeavours. A special day cover and postal stamp was released by Brigadier FR Campose (Retd), the second Commanding Officer of the battalion. The occasion was made more vibrant with the performances of Kalaripaittu, Chendamelam team and the brass band team from the Madras Regimental Centre. The unit was also presented with four major silver trophies during the occasion by the Col of the Madras Regiment, all commanding officers, all serving and retired officers, all serving and retired JCOs.