With a plucky team of heroes including Duffy (John Gregson) and Corbett (Donald Sinden), Fraser makes his attack but it fails even before they reach the Tirpitz. There is a plan B though, with midget submarines. Three of which make an attack, penetrating deep into German occupied territory, evading patrol boats and torpedo nets...
A very tense film, especially during the actual attack. Submarines are always claustrophobic but a midget submarine where you can't move without risking kicking a comrade in the head are even more so. The film is based on real events and is a fitting tribute to the sheer courage needed to perform such deeds.
