Maritime forces from a host of nations are set to participate in the UK-led Exercise Joint Warrior 142, which will start on 7 October in Scotland.
Claimed to be Nato's biggest of its kind, the exercise involves 22 naval units and approximately 52 fixed-wing aircraft.
Participating nations include the UK, US, the Netherlands, France, Denmark, Norway, Spain, Germany, Lithuania, Belgium, Poland, Estonia, and Latvia.
Conducted by the UK twice a year, the exercise includes air, surface and underwater threat training.
The two-week drill will begin with an initial period of military and political tension, as well as simulated war fighting.
During the exercise, personnel will respond to a range of modern, realistic simulated scenarios covering anti-submarine warfare, anti-surface warfare, mine countermeasures, live firing and counter-smuggling and counter-insurgency, as well as electronic warfare and logistics support.
As part of the exercise, the armed forces will also practise GPS denial operations, which will be executed in a confined area in north-west Scotland at specific times.
The UK's Typhoon and Tornado GR4 aircraft will participate and operate from RAF Lossiemouth, which will also host fighter planes from Sweden, Belgium, and Germany.
Ships from Spain, the Netherlands, US, Latvia, and Poland, will dock at HM Naval Base Clyde, while French and Danish vessels will berth at Glasgow.
Image: The UK Navy's HMS Brocklesby is taking part in Exercise Joint Warrior. Photo: courtesy of the UK Royal Navy.