The name of the exercise comes from the Dutch region where it takes place (Image: Royal Navy).
Royal Marines from 43 Commando Fleet Protection Group have been in the Netherland training for how to defend the UK's nuclear deterrent.
Personnel have been part of Exercise Gelderland Strike at the Dutch infantry school at Harskamp, near Arnhem, away from their headquarters in Scotland where they patrol around Faslane Naval Base, protecting Britain’s nuclear weapons.
Gelderland Strike began with physical training and finished with a mock assault on a village.
During the four-day exercise, Royal Marines also practised shooting with a C8 assault rifle, Glock pistol, Sharpshooter rifle and General-Purpose Machine-Gun.
A sprint to the firing range was complicated when the Marines were given extra weights to carry, testing their ability upon arrival to fire accurately while tired and stressed.
"The competitive nature of the scenario pushes you on to do better, as everyone wants to out-do the other teams," said Marine 'Mac' McDonald – whose section scored the highest number of points in the exercise.
“As a troop, this makes everyone build each other up so that the team performs better collectively. The casualty evacuation drills added some urgency and realism to the scenario."
Colonel Tony de Reya, Commanding Officer 43 Commando Royal Marines, said:
"My commandos were buzzing by the end of this high-energy training package.
"[They] will build on the camaraderie and use their skills back at their home base around the Clyde, with the exercise helping maintain effectiveness in their core role of protecting the UK’s fleet of Vanguard-class submarines."