More than 3,000 troops are taking part in "Operation Joint Warrior" in and around Galloway Forest in Dumfriesshire.
A group of British and French paratroopers are also carrying out a parachute drop near to the Braid Fell area.
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Westerly winds are on the way.
Two women were sexually harassed, and one sexually assaulted, after getting into a car posing as a taxi in Jedburgh on Saturday night.
Five people from Carlisle and Eden are taking on the London marathon, to raise money for Carlisle Eden Mind's Suicide Prevention project.