sentences:  By 1818, the Mulgrave Battery, consisting of six guns, had been built on Castray Esplanade, on the southern side of Battery Point upon the orders of Lieutenant Governor William Sorell.In 1824 the battery was expanded to include two 13-pounders and four 9-pounders; two other guns, 6-pounder brass pieces, were positioned in Angelsea Barracks.The period of 1828 until 1832 was a violent one in the history of Van Diemen's Land.