During World War II, the Norwegian resistance launched a series of sabotage actions against Hydroelectric plant in Vemor, Norway. Why?
To disrupt German nuclear project. In 1934, at Vemork, Norsk Hydro built the first commercial plant capable of producing heavy water as a byproduct of fertilizer production. In 1943, a team of British-trained Norwegian commandos succeeded in destroying the production facility with a second attempt, Operation Gunnerside. Operation Gunnerside was later evaluated as the most successful act of sabotage in all of World War II.