Biographers disagree on whether or not Burton ever experienced homosexual sex (he never directly acknowledges it in his writing). Allegations began in his army days when Charles James Napier requested that Burton go undercover to investigate a male brothel reputed to be frequented by British soldiers. It has been suggested that Burton's detailed report on the workings of the brothel led some to believe he had been a customer. There is no documentary evidence that such a report was written or submitted, nor that Napier ordered such research by Burton, and it has been argued that this is one of Burton's embellishments.