A former national security adviser has said he would have advised against Prince Harry sharing so much detail regarding his experiences fighting in Afghanistan. In leaked extracts of the Duke of Sussex’s memoir, Spare, which is published on January 10, Prince Harry described how he killed 25 people when he was deployed flying an attack helicopter between 2012-2013. He added that while soldiers do not usually know how many enemies they have killed, “in the era of Apaches and