An exhausted and frustated migrant holds his head after he missed to get a place on a train heading to the Serbian border at the train station in Gevgelija, The Former Yugoslav Republic of Macedonia, August 13, 2015. From the beginning of the year to mid-June 2015, nearly 160,000 migrants landed in the southern European countries, mainly Greece and Italy, on their way to wealthier countries in Western and Northern Europe, according to estimates by the International Organization for Migration (IOM). (Photo by Georgi Licovski/EPA)

British housewives toss pancakes in skillets as they run through the streets of Olney, England, in the community's annual race which follows a 500-year-old tradition, February 6, 1951. Mrs. Isabel Dix, 22, extreme right, won the race covering the 415 yards from the Parish pump to the door of Sts. Peter and Paul church in one minute, 12.1 seconds. (Photo by AP Photo)

Throughout the course of the long war in Afghanistan, Coalition troops have relied on thousands of military working dogs to help keep them safe, and make their jobs easier. The dogs are trained to detect explosives, to find illegal drugs, to search for missing comrades, or target enemy combatants. Not only are they active on the front lines, but behind the lines they serve as therapy dogs, service dogs, and loyal companions. They also share the same risks as the ground troops, suffering injuries and sometimes death on the battlefields. Gathered here are images of these dogs and their handlers in Afghanistan and back home, from over the past several years, part of the ongoing series here on Afghanistan.

Ten-year-old Macy Friday, front left, reacts as she looks back at her family after meeting Hillary Clinton, front right, as she campaigns for U.S. Sen. Mark Udall, D-Colo., back, during a stop in the newly-renovated Union Station in Denver on Monday, October 13, 2014. Clinton appeared at an event to raise money for Udall's current re-election campaign and then headed to Las Vegas for another appearance on Monday night. (Photo by David Zalubowski/AP Photo)

Nicki Minaj attends the 14th Annual CFDA Vogue Fashion Fund Gala at Weylin on Monday, November 6, 2017, in New York. (Photo by Splash News and Pictures)

Lyon's Ghanaian forward #37 Ernest Nuamah celebrates after scoring a goal during the French L1 football match between Olympique Lyonnais (OL) and Stade de Reims at The Groupama Stadium in Decines-Charpieu, central-eastern France on March 30, 2024. (Photo by Olivier Chassignole/AFP Photo)

A man uses iron sheet to make noises, as a way of trying to disperse desert locusts that had invaded their farms during the second wave invasion in Kakongo village, in Nuu-Mwingi East, in Kitui, Kenya, 06 February 2021. The second wave invasion of the desert locusts in the country comes at a time where most famers are expecting to harvest their farm produce in the country. (Photo by Daniel Irungu/EPA/EFE)

New York nightclub owner Jack L Hickman spends his free time marching around Times Square with a sign that reads “The only good communist is a dead communist”. (Photo by Peter Keegan/Keystone/Getty Images). 26th April 1965