@SASless
That is an interesting link, thank you.
I am more impressed with the Italian frogmen and their mission in Alexandria in 1941.
Luigi Durand de la Penne, Emilio Bianchi, Vincenzo Martellotta, Mario Marino, Antonio Marceglia and Spartaco Schergat.
read about the raid here. . Their example quite deflates the nasty stereotype of Italians as other than brave. Bold men executing a bold plan. Actual Royal Navy warships were put out of action, which at that stage of the war was a serious matter.