KANDAHAR, AFGHANISTAN – NOVEMBER 09: Prince Harry in military combat dress uniform joins British troops and service personal remaining in Afghanistan and also International Security Assistance Force (ISAF) personnel and civilians as they gather for a Remembrance Sunday service at Kandahar Airfield November 9, 2014 in Kandahar, Afghanistan. Prince Harry’s memoir “Spare” is scheduled to officially go on sale on January 10, but journalists have already obtained leaked excerpts or copies that accidentally went on sale early in Spain. In his memoir he claims that he killed 25 Taliban fighters during his tours as a soldier in Afghanistan. (Photo by Matt Cardy/Getty Images)