Ordnance Factory Day is observed on 18 March to commemorate the beginning of production at India's first ordnance factory at Cossipore, Kolkata, in 1802.
- In 2021, the Ordnance Factory Board was reorganised into seven Defence Public Sector Undertakings (DPSUs).
- India has 41 ordnance factories employing about 70,000 people, and exports defence products to over 30 countries.
- Key products include rifles, artillery, tanks, explosives, parachutes and military clothing.