Gary spends his birthday on guard duty. Charlie starts a rumour about himself.

Gary takes part in a debate about the Iraq War in University of St Andrews against an anti-war student, organised by the OC's annoying brother.

Hallowe'en is a big deal on the barracks and the boys are determined to successfully defend their dooking for apples trophy. Gary goes with Julie to see a fortune teller, who gives Gary a spooky and terrifying prediction. All seems fine back at the barracks as Jacko and Charlie train Mickey up for his dooking debut, but Gary starts to panic as the prediction starts to come true. It takes the lure of a massive trophy to get Gary to the Hallowe'en party, but once there he comes face to face with the terrifying conclusion to the prediction.

A posting to Germany hasn't quite lived up to the excitement levels of Afghanistan and Iraq and Gary is desperate to get home. But when Charlie announces that he's just got engaged, the final week gets a lot more interesting. Charlie's bride-to-be makes quite an impression, and while Mickey thinks she seems fun, Jacko is less generous with his feedback. Gary's initial misgivings are replaced with his excitement at being asked to be best man, and he starts making preparations for his special day.

Gary agrees to help his father by buying a cooker for him and collecting it in the tank whilst on exercise. Despite the show's name, this is the first appearance of the tank (actually an AS-90) which Gary commands.

It's been 15 years since Gary's mum passed away and his dad Martin thinks that it's finally time to scatter her ashes. Gary, Martin, Julie and Gary's aunt Margaret all set out to his mum's favourite beauty spot, but find that it's changed a lot since they used to go there. Gary needs to come up with a back-up plan but he's distracted by a series of mysterious phone calls that not only annoy his aunt and Julie, but also manages to offend his dad on the worst day possible.

Gary, Jacko, Charlie and Adam have completed their latest tour of duty in Afghanistan and arrive at the aircraft hangar ready to be taken home, only to be told their flight has already left. Faced with waiting another 12 hours in a hot, cramped hangar, Gary decides to try and bribe his way onto an earlier flight using a pretty uninspiring collection of belongings from the boys. He's been turned down by the RAF as well as most of the squaddies in the hangar until finally he meets Cammy, a squaddie with an impeccable sales pitch and an offer Gary mistakenly thinks is too good to be true.

Cpl Gary McLintoch and his tank crew return from Iraq to tackle their toughest mission yet - a recruitment stall in the local shopping centre. And when the worst recruit ever is signed up, the boys try desperately to pull off the great escape.

Following a prank that went wrong, Sergeant Thomson takes a brief break from his day off to punish Gary and the boys by putting them on kitchen duty for the Captain's important dinner. Chef works hard to keep them under control while also trying to create a dinner good enough to impress Colonel Fanshaw, the Captain's father. But when an inebriated Thomson returns to wreak havoc in the kitchen, it's left to Gary to ensure that the dinner is a success and the Captain isn't embarrassed in front of 'Colonel Daddy'.

Gary swaps the tank for a Green Goddess as the army covers a firefighters' strike. The boys prepare for their first fire, but when it finally comes, it's their people skills that face the ultimate test.