Image of the Clouds taken in August 2014 by astronauts on board the International Space Station (ISS). A year from space photographs of hurricanes, typhoons and meteorite craters show an astronauts-eye view of our planet from hundreds of miles above the earth. The illuminating images were taken by astronauts onboard the International Space Station (ISS) over the course of 2014. (Photo by NASA/SPL/Barcroft Media)

An Afghan policeman stands guard as smoke and flames rise from the site of a huge blast struck near the entrance of Kabul's international airport, in Kabul on August 10, 2015. A huge blast struck near the entrance of Kabul's international airport on August 10 during the peak lunchtime period, officials said, warning that heavy casualties were expected. “The explosion occurred at the first check point of Kabul airport”, said deputy Kabul police chief Sayed Gul Agha Rouhani. (Photo by Shah Marai/AFP Photo)

A volunteer photographs a woman as she kisses a volunteer wearing a condom costume during marking the International Condom Day in Kiev, Ukraine, 13 February 2015. The event was organized to promote and create awareness towards “Safe s*x” and the use of condoms to control and prevent Human Immunodeficiency Virus (HIV) and other sexually transmitted diseases on the occasion of the International Condom day. (Photo by Roman Pilipey/EPA)

A woman with disability communicates with sign language as they sit and demonstrate with Disability Activists Forum demanding their rights from the Bengal Government, during the International Day of Persons with Disabilities in Kolkata, Eastern India, 03 December 2021. The International Day of Persons with Disabilities is annually observed on 03 December with an objective to promote an awareness of disability issues, the fundamental rights of persons with disabilities and integration of persons with disabilities in the mainstream of each aspect of the social, political, economic and cultural status of their communities. (Photo by Piyal Adhikary/EPA/EFE)

A woman looks at model of the Cathedral Mosque in Kazan, during the 28th International Exhibition – Forum of Architecture and Design “Arch Moscow” in Moscow, Russia, 24 May 2023. Arch Moscow is one of the oldest architectural and construction exhibitions in Moscow. The 28th International Exhibition – Forum of Architecture and Design takes place from 24 May to 27 May 2023. (Photo by Yuri Kochetkov/EPA/EFE/Rex Features/Shutterstock)

A person takes photos of Vervet monkeys that are eating in a parking lot near the Fort Lauderdale-Hollywood International Airport in Dania Beach, Florida, USA, 10 May 2022. Over 40 descendants of smallish vervets, escaped from now closed breeding facility, are living within 1,500 acres around the Fort Lauderdale-Hollywood International airport. The Dania Beach Vervet Project is an organization established in 2016 with the purpose of promote the conservation, and education about the local free ranging vervet monkeys in Dania Beach, Florida. (Photo by Cristóbal Herrera/EPA/EFE)

This photo provided by Red Antler Processing shows the alligator sport hunting team made up of, from left, Tanner White, tag-holder Donald Woods, Will Thomas and Joey Clark as they hoist, with the help of a forklift, the longest alligator officially harvested in Mississippi, Saturday, August 26, 2023, at Red Antler Processing in Yazoo City, Miss. The male alligator weighed 802.5 pounds and measured 14 feet, 3 inches long, and its length broke the state record as the longest alligator ever caught, according to the Mississippi Department of Wildlife, Fisheries and Parks. (Phoot by Shane Smith/Red Antler Processing via 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.