Exercise Joint Warrior will test their ability to work together with the forces of nine other countries.

BBC: UK deploying 5,250 personnel for Exercise Joint Warrior

Joint Warrior is Europe's largest military exercise and is held twice a year.

BBC: Royal Navy 'changes training' to avoid whales

Some training as part of Exercise Joint Warrior has been altered to avoid Portmahomack in Easter Ross where three long-finned pilot whales were stranded.

BBC: Royal Navy 'changes training' to avoid whales