Sir Charles Warren and the Battle of Spiel and Cop

After resigning from the Metropolitan Police, Warren was sent to fight in South Africa. His troops were massacred by Boer artillery that his own officers couldn't locate on the battlefield. The battle was such a disaster that Warren was even called 'the most incompetent commander of the whole Second Boer War' He later published a self-congratulatory rant under a false name but it did little to convince anyone he had any ability at all.