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.
More top news
Over 500 school pupils and 200 adults took part in a series of local sporting and health events raising £1500 for charities.
UNISON Scotland is urging local government workers around the country to go on strike over pay.
A cycling accident in 2012 left 32-year-old Will Clark paralysed from the neck down, but it didn't take away his love for the outdoors.