Fort William is a fort in Hastings, Calcutta. It was built during the early years of Britain's administration of Bengal. It sits on the eastern banks of the River Hooghly, the major distributary of the River Ganga. One of Kolkata's most enduring British-era military fortifications, other than those in Bombay and Madras, it extends over an area of seventy hectares.
Built: 1696–1702
Controlled by: Bengal Subah (before 1757) · British East India Company (1757–1858) · British Raj (1858–1947) · Indian Army (1947–present)
In use: 1781–present
Battles/wars: Battle of Plassey (1757)
Garrison: Eastern Command
Type: Fortress, garrisoned and armoured army headquarters.