The Armed Forces Rally Team is in Iceland preparing for its biggest challenge of the year, the 2015 Rally Reykjavik. 
 
The event, which starts on Thursday, is likely to test the team's skills to the max. 
 
Outside of the World Rally Championship there are few tougher events, with hundreds of kilometres of special stages taken in over three days, through glaciers, dried up river valleys and even over active volcanoes.