In Pictures

Members of Zulu Company, 45 Commando Royal Marines, conducting contact drills in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Whiskey Company, 45 Commando Royal Marines, on the tactical phase of their training in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

A Royal Marine from 45 Commando takes part in ice-breaking drills during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

A Royal Marine from 45 Commando takes part in ice-breaking drills during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Whiskey Company, 45 Commando Royal Marines, engaged on a live firing training package during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Zulu Company, 45 Commando Royal Marines, conducting contact drills in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Zulu Company, 45 Commando Royal Marines, conducting contact drills in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

A member of Whiskey Company, 45 Commando Royal Marines, on the tactical phase of training during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Whiskey Company, 45 Commando Royal Marines, engaged on a live firing training package during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Members of Whiskey Company, 45 Commando Royal Marines, engaged on a live firing training package during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

HMS Ocean in Norway for Exercise Cold Response [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

Members of Zulu Company, 45 Commando Royal Marines, perform an amphibious landing during their winter deployment to Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

A Royal Navy Sea King helicopter approaches HMS Ocean [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

Royal Marines' Lynx helicopters aboard HMS Ocean [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

Members of Whiskey Company, 45 Commando Royal Marines, demonstrate their weapon systems during Exercise Cold Response in Norway [Picture: LA(Phot) Nick Tryon, Crown Copyright/MOD 2010]

Elements of 45 Commando Royal Marines conduct a beach landing using Landing Craft, Vehicle, Personnel (LCVP), Offshore Raiding Craft and Utility Landing Ships [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

HMS Albion, HMS Ocean and RFA Mounts Bay engaged on Exercise Cold Response in northern Norway [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

539 Assault Squadron craft transport Zulu Company, 45 Commando Royal Marines, to the beach during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

539 Assault Squadron craft transport Zulu Company, 45 Commando Royal Marines, to the beach during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

539 Assault Squadron craft transport Zulu Company, 45 Commando Royal Marines, to the beach during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

Members of Zulu Company, 45 Commando Royal Marines, during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

Members of Zulu Company, 45 Commando Royal Marines, carry out beach landing during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

The Northern Lights shimmering above HMS Ocean's flight deck [Picture: LA(Phot) Bernie Henesy, Crown Copyright/MOD 2010]

Mountain Leaders taking Royal Marines from the Brigade Reconnaissance Force ice-climbing as part of cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

Mountain Leaders taking Royal Marines from the Brigade Reconnaissance Force ice-climbing as part of cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

Mountain Leaders taking Royal Marines from the Brigade Reconnaissance Force ice-climbing as part of cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

The new Landing Craft Air Cushioned (Light Replacement), which is operated by Royal Marines from 539 Assault Squadron, in action during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

The new Landing Craft Air Cushioned (Light Replacement), which is operated by Royal Marines from 539 Assault Squadron, in action during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

A Royal Marine from the United Kingdom Landing Force Command Support Group taking part in the fight phase of the exercise in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

7 (Sphinx) Commando Battery Royal Artillery firing 105mm guns on the Setamoan Ranges during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]

Royal Marines from the United Kingdom Landing Force Command Support Group during cold weather warfare training in Norway [Picture: PO(Phot) Dave Husbands, Crown Copyright/MOD 2010]