US Marines walk in line after arriving in Kandahar on October 27, 2014, as British and US forces withdraw from the Camp Bastion-Leatherneck complex in Helmand province. British forces October 26 handed over formal control of their last base in Afghanistan to Afghan forces, ending combat operations in the country after 13 years which cost hundreds of lives. The Union Jack was lowered at Camp Bastion in the southern province of Helmand, while the Stars and Stripes came down at the adjacent Camp Leatherneck -- the last US Marine base in the country. AFP PHOTO/WAKIL KOHSAR