Joint Warrior is a multinational exercise linked to the NATO exercise programme.

It is hosted in the UK and is one of the largest tri-service and multinational exercises of its kind in Europe, incorporating the Royal Navy, Army, and Royal Air Force.

HRH, who is Commodore-in-Chief of the Canadian Royal Navy’s Canadian Fleet Atlantic, joined crews of two participating Canadian vessels to mark the start of Joint Warrior on Saturday.

He met with captains and crews of Her Majesty’s Canadian Ships Montreal and Windsor, which were berthed at HM Naval Base Clyde ahead of the exercise.

HRH was briefed by Flag Officer Scotland and Northern Ireland (FOSNI) on the importance of Joint Warrior to both the collective defence of NATO allies, and the support of Faslane to NATO and allied forces.

Rear Admiral John Weale OBE, FOSNI, gave his backing to the exercise and emphasised the important role Joint Warrior plays in building even closer links between the UK and NATO allies, including the Canadians.

The 13-day exercise began on Saturday, and involves 30 warships and submarines, 60 aircraft, and around 6,300 personnel from the 12 nations taking part.

Ships, submarines, aircraft and ground troops from the UK, US and other NATO allies will take part, improving interoperability and warfighting capability at sea, in the air and on land. Exercise activity will be focused off the West and East coasts of Scotland.

Commodore Toby Williamson, Commander Operational Training and the Royal Navy’s lead for training and exercising at this level, said: “Exercise Joint Warrior is an opportunity to practice with and against our coalition partners, experiment and learn from them, and ultimately hone our tactics to the highest possible level.

“Sometimes, a single warship is able to fight alone and unafraid, but normally, the UK would provide security at sea as part of a task group, integrated across land, sea and air, alongside our coalition partners.”