sentences:  As the advance was halted, the Australians began to expect a major attack in the area of the knoll.The Japanese launched a number of attacks on the Australians between 15 and 17 March.Under fire from three sides and in danger of being enveloped, on 19 March the Australians launched an attack of their own along the Buin Road, and although they had some success in clearing the forward Japanese positions, they then encountered a system of pillboxes and trenches around the Hatai Road junction.