The merger between the King's Fusiliers and the Cumbrians is complete and all men struggle to cope with the new arrangements. During an exercise, the men fall foul of a rival regiment and Dave Tucker facing losing his stripe.
The collapse of the Garvey's marriage spell trouble for Paddy and matters compound during bungled exercises, provocation by an officer and a misguided accusation result in events which could lead to the end of his career.
Bernie Roberts has trouble convincing the authorities that she's not to blame for an accident. Kieron Voce faces criticism from senior officers but the lads back him up and Paddy and Christina finally get together.
The men head to Amsterdam for some R&R and take a colleague to allow his wife a break. Keiron Voce and Kate Butler face wagging tongues about their closeness but finally face up to their true feelings for each other.
Paddy Garvey makes a good impression but has trouble getting the recognition he deserves. The Stubbs have to deal with the fallout of Sarah's earlier actions and the men find out where their next posting will be.