8.9K views · 116 reactions | Chain of Command is an intimate portrait of the war against violent extremism, and the men and women devoting their lives to it. Catch the premiere this Friday, February 9th at 10pm HKT, 9pm BKK/JKT on National Geographic. | National Geographic Asia | Facebook

25K views · 120 reactions | Colonel Patrick Work starts every day by checking in with his teams fighting ISIS in Mosul. #ChainOfCommand | National Geographic TV | Facebook

Set your DVR! #ChainOfCommand premieres Tonight at 9/8c. | National Geographic TV

108K views · 199 reactions | From inside the Pentagon to the front lines, gain unprecedented access to the war of our generation in Chain of Command, coming in 2018. | National Geographic TV | Facebook

81K views · 1K reactions | In this clip from episode 4 of NatGeo's "Chain of Command" documentary series, Captain Mark G. Zwirgzdas reflects on his time with Gator Company, 2nd Battalion, 325th Airborne Infantry Regiment as there's a change of command. | Military.com | Facebook