What is the fine-grained topic of the following text: At 3.30 in the morning a force consisting of 4 companies of the 1/24th , the 1/3rd NNC and a large contingent of mounted men attacked the home of Sirayo, father to Mehlokazulu whos actions in killing his adulterous mother brought down the wrath of the imperial army. Only return the topic.
Attack on Sirayo's home by the imperial army