Changes

*St Stephen (Anglican). This church is now the location of St Stephen's School.

*St Patrick's Church (Roman Catholic). Built in 1823, partly with the help of Irish Fusiliers, partly by contribution from Kolkata Catholics led by Mr. Joseph Baretto; initially intended for Irish soldiers stationed at Dum Dum with resident military chaplain.<ref>[http://www.archdioceseofcalcutta.in/deaneries-24.html Calcutta Archdiocese : 24 Parganas (N) Deanery]. Retrieved 25 August 2014.</ref>

==The Bengal Artillery and ammunition factory==

The Bengal Artillery were at Dum Dum from 1775 and an ammunition factory was established in 1846.

Bandopadhyay's ''History of Gun and Shell Factory, Cossipore: Two Hundred Years of Ordnance Factories Production in India'' explains that the small arms cartridges known as 'Dum Dum' bullets were made at the Dum Dum factory and that the pre-Indian Mutiny trouble regarding greased cartridges started in this area. By 1858, the workshops at Dum Dum had merged to become the Cartridge and Precision Cap factory.<ref> Professor Arun Bandopadhyay ''History of Gun and Shell Factory, Cossipore: Two Hundred Years of Ordnance Factories Production in India'' (New Delhi, 2002) </ref> HIS Kanwar's ''Memories of Dum Dum'' provides further information on this topic.<ref>Hari Inder Singh Kanwar, ''Memories of Dum Dum (Reprinted from Bengal: Past and Present)'' (1961) The articles originally appeared 1953-1959.</ref>

==Second World War==