In Pictures

A convoy of Jackal all terrain vehicles transports the Brigade Patrol Troop as they deploy on Operation DIESEL [Picture: PO(Phot) Dave Husbands]

The view from the top of one Jackal all terrain vehicle to others in the convoy as the Brigade Patrol Troop deploy on Operation DIESEL [Picture: PO(Phot) Dave Husbands]

The Brigade Patrol Troop operating from Camp Bastion use the Jackal all terrain vehicle to deploy on Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 45 Commando Royal Marines wait for a colleague to detect potential improvised explosive devices whilst on patrol through the Upper Sangin Valley during Operation DIESEL [Picture: LA(Phot) Nick Tryon]

A member of 45 Commando Royal Marines uses a metal detector to pick a safe path through potential improvised explosive devices whilst on patrol through the Upper Sangin Valley during Operation DIESEL [Picture: LA(Phot) Nick Tryon]

Members of Y Company 45 Commando Royal Marines clear through their objective compounds during Operation DIESEL [Picture: CSgt Baz Shaw]

Members of Y Company 45 Commando Royal Marines enter a compound through a 'mousehole' during Operation DIESEL [Picture: CSgt Baz Shaw]

Lance Corporal Chris Copp takes time to study his map as his section holds firm having cleared a compound during Operation DIESEL [Picture: CSgt Baz Shaw]

Marine Alexander, X Company 45 Commando Royal Marines, centralising the opium found during Operation DIESEL [Picture: CSgt Baz Shaw]

Members of 7 Troop Lima Company 42 Commando Royal Marines secured a vital river crossing during Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines patrol through the Upper Sangin Valley during Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines force entry into a compound in the Upper Sangin Valley during Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines search and clear compounds in the Upper Sangin Valley where processing plants were discovered during Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines prepare to enter a compound in the Upper Sangin Valley during Operation DIESEL [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines deployed on Operation DIESEL in the Upper Sangin Valley providing Top Cover [Picture: PO(Phot) Dave Husbands]

Members of 7 Troop Lima Company 42 Commando Royal Marines deployed on Operation DIESEL search compounds in the Upper Sangin Valley for enemy forces [Picture: PO(Phot) Dave Husbands]

A member of 7 Troop Lima Company 42 Commando Royal Marines deployed on Operation DIESEL in the Upper Sangin Valley looks for insurgents [Picture: PO(Phot) Dave Husbands]