Two months after the Allied military victory in Takistan, the new government is restoring the war-torn country. NATO forces assisting in this effort face the threat of insurgency, waged by the remnants of the defeated Takistani army in the mountaineous regions of Takistan. Company team of British paratroopers patrolling the treacherous mountains in Zargabad's vicinity is ordered to battle the amassing guerilla warriors.

The first DLC to be released after the Operation Arrowhead expansion pack, the DLC adds the British Armed Forces as a playable faction and the Shapur terrain, a small map set in the fictional Green Sea nation of Takistan.

BAF contains an entirely new set of vehicles, firearms, as well as backpacks for use by the faction. Most of the content also comes in woodland and desert-camouflaged varieties for use in both environments. Dedicated British English radio protocols have been added, as well as extra British faces to expand on the existing set of selectable identities introduced with Operation Arrowhead.

It includes a short singleplayer campaign which is set in the immediate aftermath of the Operation Arrowhead invasion. It follows the story of Brian Frost, a squad leader from the British Army who is deployed alongside a British task force sent to the country as part of NATO's post-invasion stabilisation efforts.