Chain of Command

S1:E1 Part 1, 'By, With & Through'

Chain of Command begins with a look at the effort to regain control of eastern Mosul, Iraq.

S1:E2 Part 2, 'Perception and Reality'

As the war on extremism continues globally, the battle for western Mosul begins in Iraq.

S1:E3 Part 3, 'Shoulder to Shoulder'

The war on extremism continues across the globe — from Iraq to Colombia to Afghanistan.

S1:E4 Part 4, 'The End of the Beginning'

As the battle of Mosul nears an end, fighting extremism in Trinidad and Tobago is just beginning.

S1:E5 Part 5, 'Generations'

In Afghanistan, the Marines work with local fighters as they battle the Taliban.

S1:E6 Part 6, 'Crossroads'

The U.S. continues its global war against extremism in Afghanistan, Africa, and Panama.

S1:E7 Part 7, 'War Without Borders'

The war against violent extremism: on an aircraft carrier, and in Afghanistan and Africa.

S1:E8 Part 8, 'Why We Fight'

U.S. forces continue to face challenges in Afghanistan, and endure a tragedy in Niger.