English: top left, under title, a key, a-i:] References … NB. Each Bastion has Five Guns in Face and three in flank, besides which they mounted one Gun in Barbet at the salliant Angles covered with Sand Bags. On the East Curtain was mounted nine small pieces of Cannon covered with Sand Bags On the East Curtain was mounted nine Small pieces of Canon covered with Sand Bags, but the Enemy could not work those Guns on account of the Musketry, from on top the Houses at K which raked that Curtain. [Right, another key, 1-7:] References.

A plan of Chandernagore (Chandannagar), with the British combined assault, 23 March 1757. Seven Years War (1756-63). Oriented with north-west to top (cardinal points).

This action between the French and the British (Hon. East India Company) resulted in a British victory and gave the HEIC control of Calcutta. It was a combined operation of naval bombardment by the Kent commanded by Admiral Watson, and the Tyger under Admiral Brook, and land batteries commanded by Colonel Robert Clive (1725-74). This plan shows the lines of fire into the fortress from the ships and from onshore batteries.

There is no entry for Robert Barker in Conolly under the British, Bengal, or Madras Engineers. It is possible that Barker was an East India Company Engineer or, he had been assigned an engineer's job from the infantry. However, it seems likely, according to Stephens (2004), that this was the Robert Barker who became Brigadier-General Sir Robert Barker and Provincial Commander-in-Chief, Bengal.

Survey’d and Drawn by Rob:t Barker, Engineer.

George III catalogue entry: Chandernagore A drawn Plan of Chandernagore, with the attacks made by the Ships under the command of Admiral Watson, and that of the Troops commanded by Colonel Clive, surrendered the 23.d March 1757: by R. Barker Eng.r