Royal Marine Commando instructors train for cold weather fighting in the Cairngorms.
Cairngorm Mountains, Invernesshire, Scotland.
Soldiers of the Royal Marines march across snow covered mountains - they are wearing white cold weather combat clothing. GV camp. Soldiers climb up snow. GVs across mountains. Soldiers check map. They build walls of snow to protect tents. They are training for arctic conditions.
Another patrol sets off at lower levels. On top of the mountains Marines fix on skis. They ski down a hillside.