We rejoin the Bluestone 42 team after the IED explosion has hit their mastiff.

The team are called out to a major operation, where events take a worrying turn.

Towerblock is put through his paces after challenging Rocket to a battle of the fittest.

The team suffer a Taliban attack, which distracts Ellen and Bird from their bickering.

As the team prepare to leave Afghanistan for good, Simon receives some devastating news.