The UK Royal Navy has concluded the bi-annual war game exercise Joint Warrior in Scotland.
The fleet that took part in the exercise was comprised of warships, aircraft and marines, including HMS Iron Duke, HDMS Peter Willemoes, HMS Ramsey and ESPS Alvaro De Bazan.
More than 3,400 Nato troops participated in the multinational exercise, the Press and Journal reported.
During the exercise, the participating troops practised a range of tactics and skills, including maritime interdiction, boarding operations and replenishment at sea.
The UK, Nato and allied units were trained in a range of scenarios, including crisis and conflict situations that could be realistically encountered in operations, such as disputed territory, terrorist activity, piracy and more.
Iron Duke conducted a gunnery shoot against surface targets, then provided support to troops exercising ashore by firing illumination rounds on to a grid location at Cape Wrath.
HMS Iron Duke commanding officer commander Ben Aldous said: "The exercise has been a challenging time for my ship's company of 190 personnel, some of whom are on their first deployment away from home.
"This deployment sends a clear message that the UK is committed to Nato by operating with the task group in Joint Warrior."
The land, sea and air war games event delivers specialist maritime training, by bringing together the theatres of air, surface, underwater, and amphibious forces.
After a short break following its exertions around Scotland, the group headed back to the Baltic to continue its patrols and conduct further exercises with multinational forces.
HMS Iron Duke will return to UK waters in the middle of the year.
Image: The fleet that took part in the exercise comprised of several warships, aircraft and marines. Photo: courtesy of Royal Navy.