Chain of Command

20181 series
Available on
Nat Geo

`Chain of Command' is an intimate portrait of what has been dubbed "the war of this generation" - the US military's mission to combat violent extremism around the world - and the men and women devoting their lives to it. Filmed over 18 months, the eight-part documentary allows viewers unprecedented access inside the Pentagon to see how decisions made there have a direct impact on service members fighting on the front lines to protect Americans and US allies from radicalised extremists. The series also includes a rare on-camera sit-down with Gen Joseph Dunford Jr, the chairman of the Joint Chiefs of Staff.

By, With & Through: Episode Image
Episode 1By, With & Through

An unprecedented look inside the war against violent extremism, beginning with a look at the US and Iraqi forces' battle to regain control of eastern Mosul. (S1, ep 1)

Perception and Reality: Episode Image
Episode 2Perception and Reality

As the battle for Western Mosul begins, a unit prepares to deploy to Afghanistan. Young people leave the Caribbean island of Trinidad to fight for ISIS. (S1, ep 2)

Shoulder to Shoulder: Episode Image
Episode 3Shoulder to Shoulder

While the battle for Mosul rages in Iraq, American and Colombian agents fight to prevent ISIS from reaching US shores. (S1, ep 3)

The End of the Beginning: Episode Image
Episode 4The End of the Beginning

The battle for Mosul may be nearly won, but ISIS's ideology spreads. They recruit fighters from far and wide, including Trinidad and Tobago. (S1, ep 4)

Generations: Episode Image
Episode 5Generations

Marines return to advise the Afghan army as they struggle to fight against the Taliban. Meanwhile, one officer watches on Skype as his son is born back home. (S1, ep 5)

Crossroads: Episode Image
Episode 6Crossroads

While US marines assist the Afghan National Army, The Pentagon tries to crack down on extremist threats across the globe. Special operations forces head to Africa. (S1, ep 6)

War Without Borders: Episode Image
Episode 7War Without Borders

On an aircraft carrier off Syria, troops hope air strikes will finish off ISIS. In Afghanistan, forces try to root out extreme corruption in the Afghan army. (S1, ep 7)

Why We Fight: Episode Image
Episode 8Why We Fight

Tragedy strikes as US Special Forces work with locals to combat extremists in Niger. Meanwhile, marines prepare to return home from Afghanistan. (S1, ep 8)

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