Page "Norwegian heavy water sabotage" Paragraph 26

On 19 October 1942, a four-man team of Special Operations Executive ( SOE )- trained Norwegian commandos parachuted into Norway.

From their drop point in the wilderness they had to ski a long distance to the plant, so considerable time was given to complete this part of the mission, known as Operation Grouse.

This plan, unlike prior failures, included the team studying and memorizing blueprints.