Kingsley takes part in the battle at the Department of Mysteries and appears to be very skilled at duelling as he is seen fighting two Death Eaters at once. However, after Sirius is killed, he continues the duel with Bellatrix Lestrange, during which Kingsley is hit by a spell that causes a "loud bang" and he hits the ground "yelling in pain". In "Harry Potter and the Half-Blood Prince", the new Minister of Magic, Rufus Scrimgeour, appoints Kingsley to the Muggle Prime Minister's office, posing as a secretary, but being the Prime Minister's guard.