Anti-nuclear activists demonstrate during a “Say to Goodbye to Nuclear Energy” protest on September 11, 2011 in Kobe, Japan. Japan is marking sixth months since a magnitude 9.0 earthquake struck Japan offshore on March 11 at 2:46pm local time, triggering a tsunami wave of up to ten metres which engulfed large parts of north-eastern Japan and also damaged the Fukushima nuclear plant, causing the worst nuclear crisis in decades. The current number of dead and missing is reportedly estimated to be 22,900. (Photo by Buddhika Weerasinghe/Getty Images)

This photo provided by Joan Marcus on August 28, 2015 shows ballerina Misty Copeland in the musical “On the Town” at the Lyric Theatre in New York. Until September 6, 2015 Copeland will play Miss Turnstiles, a love interest for one of three sailors enjoying a few hours of shore leave in 1940s New York. (Photo by Joan Marcus via AP Photo)

People walk in the rainstorm as typhoon Lekima approaches in Shanghai, China on August 10, 2019. The death toll from Typhoon Lekima rose to 49 on August 13 and 21 were still missing after the monster storm wreaked havoc on China's eastern coast, causing huge damage with strong gales and torrential rain. (Photo by Aly Song/Reuters)

People participate in a Christmas Day dip on Brighton beach in southern England, Britain, December 25, 2021. (Photo by Hannah McKay/Reuters)

Maura Higgins turns up the heat in red hot Christmas lingerie and kinky thigh-high boots. The reality star, who appeared on UK Love Island in 2019, posed in skimpy underwear from Ann Summers in December 2021. (Photo by Instagram)

“The Labor Day Parade (or West Indian Carnival), is an annual celebration held on American Labor Day (the first Monday in September), in Crown Heights, Brooklyn, New York. Ms. Jessie Waddell and some of her West Indian friends started the Carnival in Harlem in the 1920s by staging costume parties in large enclosed places like the Savoy, Renaissance and Audubon Ballrooms due to the cold wintry weather of February. This is the usual time for the pre-Lenten celebrations held in most countries around the world. However, because of the very nature of Carnival, and the need to parade in costume to music, indoor confinement did not work well. The earliest known Carnival street parade was held on September 1, 1947. The Trinidad Carnival Pageant Committee was the founding force behind the parade, which was held in Harlem. The parade route was along Seventh Avenue, starting at 110th St.” – Wikipedia

Photo: A reveler looks on during the West Indian-American Day Parade September 5, 2011 in the Brooklyn borough of New York City. More than 2 million spectators were expected to attend the celebration of Caribbean culture. (Photo by Mario Tama/Getty Images)

Casket of Leibby Kletzky, a murdered eight-year-old boy who went missing from the Hasidic neighborhood of Borough Park, Brooklyn is carried during a procession on July 13, 2011 in New York City. After a two day search Kletzky's dismembered body was found partially in a suitcase inside a dumpster and partially in a refrigerator in a nearby apartment. Police detectives have taken Levi Aron, 35, into custody in connection to the killing. (Photo by Ramin Talaie/Getty Images)

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.