In the Line of Duty Season 1: Episode Guide & Ratings

The Mountain Warfare Training School is one of the toughest survival schools in the world. Operated by the U.S. Marine Corps, this school turns out uniquely qualified troops able to conduct their war fighting skills in nearly any environment on Earth.

Marines are thrown into the wilderness, and must employ a definite set of survival skills, survival in pairs and as a group. These are tough days. It will take every last shred of resolve to see them through. Questions of leadership now become crucial.

TFRD is the story of Marine Corps reservists, called to active duty and sent to the front line of the war on terror, a "forward operating base" deep in the mountains of Afghanistan. This is the epicenter of the hunt for Osama Bin Laden, and the Taliban.

The Marines of Delta Company stage at the border between Kuwait and Iraq, awaiting the start of combat. As the war begins, Delta Company tanks take the lead, destroying initial resistance and gaining speed, leading a 50 mile-long convoy deeper into Iraq.

A heroic lance corporal detonates a failed line charge by hand, helping Delta Company overcome obstacles at the Diyala Bridge. Amid scattered resistance, the tanks push through to the city. Soldiers interact with civilian populations and combat concludes.