sentences:  The final assault on the knoll came on the night of 4/5 April when 129 men from 'B' Company, 25th Infantry Battalion repulsed an attack by a force of about 1,100 Japanese, killing 292.This proved to be the 7th Brigade's final involvement in the campaign as they were relieved by the 15th Brigade shortly afterwards.Overall, 620 Japanese were killed in the battle with another 1,000 estimated to have been wounded, while the Australians suffered 189 casualties.