Corporal Stan Norton and Sergeant Ted Clark - Commandos, frogmen, mates.
But the ruthless Commando rule - if a man gets hurt, he gets left behind, whoever he is - looked like splitting them.
Ted was lying hurt in a well-guarded German army hospital. Stan was on his own in an enemy-occupied city.
But Stan said to blazes with the Commando rules. Ted was in there and he was just naturally going in to get him out.