18 March observed as a Ordnance Factories’ Day every year. The production of India’s oldest Ordnance Factory, which is at Kolkata’s Cossipore, was started on 18th of March in 1802. Ordnance Factory Board is the 37th largest defence equipment manufacturer in the world, 2nd largest in Asia, and the largest in India.

The Ordnance Factories Day is celebrated by displaying the rifles, guns, artillery, ammunition etc in exhibitions across India. The celebrations start with a parade and the exhibition will also display the photographs of various mountaineering expeditions.

Important facts

  • Ordnance Factory Board is referred to as the “Fourth Arm of Defence” and the “Force Behind the Armed Forces” of India.
  • It is functioning under the Department of Defence Production of the Ministry of Defence (MoD).
  • The Indian Ordnance Factories supplies products to all three Indian Armed Forces. ie the Indian Army, Indian Navy, and Indian Air force.
  • The Arms and Ammunition, Weapon Spares, Chemicals & Explosives, Parachutes, Leather and Clothing items are being exported to more than 30 countries worldwide.


The Ordnance Factory Board was founded in the year 1775 and its Headquarters is located in Ayudh Bhawan, Kolkata. Ordnance Factory Board consists of 41 Ordnance Factories, 9 Training Institutes, 3 Regional Marketing Centres and 5 Regional Controllerates of Safety, which is spread across India.

18 March Ordnance Factories Day in India 18 March Ordnance Factories Day in India