If you have been in Cumbria and southern Scotland recently, you can't fail to have noticed a lot of military activity.
Thousands of troops from around the world are taking part in a huge military exercise called Operation Joint Warrior.
Hannah McNulty went to see them in action:
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Thousands of people have taken up the Total Warrior challenge. Today's endurance event was held in the Lake District.
Lucy Porteous from Kelso, has won a gold medal in the mixed doubles, & bronze in the singles at the LA games.
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