sentences:  On 21 October the commandos conducted a successful amphibious raid against an LTTE base at Guru Nagar.It was also toward the end of the Jaffna campaign that the IPKF started the use of Mi-25s for close air support when they flew against LTTE positions in Chavakacheri village on 23 October 1987.Ultimately, however, after two weeks of bitter fighting the IPKF had wrested control of Jaffna and other major cities from the LTTE, but operations were to continue well into November, with major operations coming to an end with the fall of Jaffna Fort on 28 November.